Update JS deps, misc tweaks (#35643)

- Update all JS dependencies
- Enable eslint `no-useless-assignment` and fix 2 discovered issues
- Replace `gitea-vscode` svg with new `octicon-vscode`
- Remove now-unused `@ts-expect-error` comments
- Change Monaco wrapping behaviour to match the wrapping in code view:
no wrapping indent and break on any character.

web_src/js/features/repo-migration.ts

@@ -53,7 +53,7 @@ function checkAuth() {
 }
 
 function checkItems(tokenAuth: boolean) {
-  let enableItems = false;
+  let enableItems: boolean;
   if (tokenAuth) {
     enableItems = token?.value !== '';
   } else {