Resolve "Renaming in the Web IDE causes file changes to be lost"

What does this MR do?

1. Updates the mechanics of the re-naming entries in Web IDE. Instead of creating a new temp entry, we update existing entry preserving the original attributes for eventual discarding in the future
2. Resolves the main problem when changes made to a re-named file were lost after commit
3. Cleans file object attributes to get rid of those that we previously used for renaming but don't need anymore
4. Introduces new visual pattern for presenting re-named entries on the Commit view (see the screenshot in the Issue)

Also in this MR, even though not directly related to it:

• fixing the performance of openBranch action to re-use existing information instead of re-fetching it all the time
• a couple of new utilities (ide/stores/utils) for WebIDE

What doesn't this MR do?

1. Syntax highlighting after re-naming doesn't reflect the new extension. Relevant Issue. UPDATE: Merged into this MR.
2. Discarding changes on re-named entries. Relevant Issue.
3. When in a folder, renaming both an item within the folder and the folder itself is broken. Relevant Issue. UPDATE: This scenario has been fixed in this MR

Screenshots

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry

Performance and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.

Resolves #31058 (closed)