fix(Git Sync): Display up to date content in code editors when data change through git sync

[gatzjames]

Overview

Currently when content changes because of changes coming through git, the code editor doesn't reflect them immediately but requires another update to happen.

Highlights:

• Updates the cachedGitLastCommitTime and cachedGitRepositoryBranch on all updates that change data from git
• We construct an identifier in the code-editor key that updates it's state if it changes and therefore displays up to date content in these scenarios

Closes INS-5227, INS-5626