Add the local case to the network string conversion function and na…

…rrow `Account` type to `Ed25519Account` in example (#298)

* Narrow `Account` typing and add the `local` case to the network string conversion function.

* Remove `Account` => `Ed25519` account as it's already in another PR

Update changeset

---------

Co-authored-by: matt <xbtmatt@gmail.com>
Co-authored-by: Maayan <maayan@aptoslabs.com>

.changeset/honest-monkeys-shake.md

@@ -0,0 +1,5 @@
+---
+"@aptos-labs/wallet-adapter-core": patch
+---
+
+Add the `local` case to the switch statement that converts a string to a Network.

packages/wallet-adapter-core/src/LegacyWalletPlugins/conversion.ts

@@ -25,6 +25,8 @@ export function convertNetwork(
       return Network.TESTNET;
     case "devnet" as Network:
       return Network.DEVNET;
+    case "local" as Network:
+      return Network.LOCAL;
     default:
       throw new Error("Invalid Aptos network name");
   }