Restore "v4 URL Mode (#2919)"

The backend issue has been resolved.

Also bumped the minimum version for better logging.

.env.defaults

@@ -4,7 +4,7 @@
 
 # --- Minimum Version (Format: YYYYMMDDNNN) ---
 # Bump this when we want to nudge the user to refresh.
-MINIMUM_VERSION=20230804001
+MINIMUM_VERSION=20230814001
 
 # This is 'false' in the production instances:
 IGNORE_MINIMUM_VERSION=true

flow-typed/publish.js

@@ -142,7 +142,6 @@ declare type FileUploadSdkParams = {
   uploadUrl?: string,
   publishId?: number, // ID to query `stream_create | stream_update` progress
   sdkRan?: boolean, // Legacy v3 flag (deprecated)
-  isMarkdown: boolean,
   channel_id: ?string,
 };
 

ui/component/publish/shared/publishName/name-help-text.jsx

@@ -24,7 +24,7 @@ function NameHelpText(props: Props) {
 
   const currentUploadNames: Array<string> = React.useMemo(() => {
     // $FlowFixMe - unable to resolve mixed
-    return Object.values(currentUploads).map((x) => (x.params ? x.params.name : ''));
+    return Object.values(currentUploads).map((x) => (x.params && !x.params.preview ? x.params.name : ''));
   }, [currentUploads]);
 
   let nameHelpText;