feat: Update Redesign Signature subtitles (MetaMask#27359)

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## **Description**

<!--
Write a short description of the changes included in this pull request,
also include relevant motivation and context. Have in mind the following
questions:
1. What is the reason for the change?
2. What is the improvement/solution?
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[![Open in GitHub
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## **Related issues**

Fixes: MetaMask#27218

## **Manual testing steps**

Test test-dapp personal sign and typed sign signatures

## **Screenshots/Recordings**

<!-- If applicable, add screenshots and/or recordings to visualize the
before and after of your change. -->

### **Before**

<img width="320"
src="https://github.com/user-attachments/assets/13c829bf-0605-42b1-b735-ecb7fde4f7ec">
<img width="320"
src="https://github.com/user-attachments/assets/82895e25-609f-48ab-8512-613f0ee9c6b0">

### **After**

<img width="320"
src="https://github.com/user-attachments/assets/8778eb35-cede-4f87-891f-9c3ea9a03b2b">
<img width="320"
src="https://github.com/user-attachments/assets/727508a8-1819-452d-99b7-f6c768f977f1">

## **Pre-merge author checklist**

- [ ] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask
Extension Coding
Standards](https://github.com/MetaMask/metamask-extension/blob/develop/.github/guidelines/CODING_GUIDELINES.md).
- [ ] I've completed the PR template to the best of my ability
- [ ] I’ve included tests if applicable
- [ ] I’ve documented my code using [JSDoc](https://jsdoc.app/) format
if applicable
- [ ] I’ve applied the right labels on the PR (see [labeling
guidelines](https://github.com/MetaMask/metamask-extension/blob/develop/.github/guidelines/LABELING_GUIDELINES.md)).
Not required for external contributors.

## **Pre-merge reviewer checklist**

- [ ] I've manually tested the PR (e.g. pull and build branch, run the
app, test code being changed).
- [ ] I confirm that this PR addresses all acceptance criteria described
in the ticket it closes and includes the necessary testing evidence such
as recordings and or screenshots.

test/integration/confirmations/signatures/personalSign.test.tsx

@@ -163,9 +163,7 @@ describe('PersonalSign Confirmation', () => {
 
     expect(getByText('Signature request')).toBeInTheDocument();
     expect(
-      getByText(
-        'Only confirm this message if you approve the content and trust the requesting site.',
-      ),
+      getByText('Review request details before you confirm.'),
     ).toBeInTheDocument();
   });
 

ui/pages/confirmations/components/confirm/title/title.test.tsx

@@ -36,9 +36,7 @@ describe('ConfirmTitle', () => {
 
     expect(getByText('Signature request')).toBeInTheDocument();
     expect(
-      getByText(
-        'Only confirm this message if you approve the content and trust the requesting site.',
-      ),
+      getByText('Review request details before you confirm.'),
     ).toBeInTheDocument();
   });
 
@@ -66,9 +64,7 @@ describe('ConfirmTitle', () => {
 
     expect(getByText('Signature request')).toBeInTheDocument();
     expect(
-      getByText(
-        'Only confirm this message if you approve the content and trust the requesting site.',
-      ),
+      getByText('Review request details before you confirm.'),
     ).toBeInTheDocument();
   });
 

ui/pages/confirmations/components/confirm/title/title.tsx

@@ -107,11 +107,11 @@ const getDescription = (
       if (isSIWESignatureRequest(confirmation as SignatureRequestType)) {
         return t('confirmTitleDescSIWESignature');
       }
-      return t('confirmTitleDescSignature');
+      return t('confirmTitleDescSign');
     case TransactionType.signTypedData:
       return isPermitSignatureRequest(confirmation as SignatureRequestType)
         ? t('confirmTitleDescPermitSignature')
-        : t('confirmTitleDescSignature');
+        : t('confirmTitleDescSign');
     case TransactionType.tokenMethodApprove:
       if (isNFT) {
         return t('confirmTitleDescApproveTransaction');

ui/pages/confirmations/confirm/__snapshots__/confirm.test.tsx.snap

@@ -99,7 +99,7 @@ exports[`Confirm matches snapshot for signature - personal sign type 1`] = `
           <p
             class="mm-box mm-text mm-text--body-md mm-text--text-align-center mm-box--padding-bottom-4 mm-box--color-text-alternative"
           >
-            Only confirm this message if you approve the content and trust the requesting site.
+            Review request details before you confirm.
           </p>
           <div
             class="mm-box mm-box--margin-bottom-4 mm-box--padding-2 mm-box--background-color-background-default mm-box--rounded-md"
@@ -2248,7 +2248,7 @@ exports[`Confirm should match snapshot for signature - typed sign - V4 1`] = `
           <p
             class="mm-box mm-text mm-text--body-md mm-text--text-align-center mm-box--padding-bottom-4 mm-box--color-text-alternative"
           >
-            Only confirm this message if you approve the content and trust the requesting site.
+            Review request details before you confirm.
           </p>
           <div
             class="mm-box mm-box--margin-bottom-4 mm-box--padding-2 mm-box--background-color-background-default mm-box--rounded-md"
@@ -3766,7 +3766,7 @@ exports[`Confirm should match snapshot signature - typed sign - order 1`] = `
           <p
             class="mm-box mm-text mm-text--body-md mm-text--text-align-center mm-box--padding-bottom-4 mm-box--color-text-alternative"
           >
-            Only confirm this message if you approve the content and trust the requesting site.
+            Review request details before you confirm.
           </p>
           <div
             class="mm-box mm-box--margin-bottom-4 mm-box--padding-2 mm-box--background-color-background-default mm-box--rounded-md"