format - extract formatting logic, make it so that we potentially run multiple providers sequentially (off for now)

Enable strict null checking for SplitView test

Enable strict null checking for GridView test

Add contrast ratio to inspect TM widget

Enable strict null checking for Arrays tests

HTTPS link to EditorConfig.org

Update "Open changes" icons to better reflect diff changes

Prevent 'Report Issue' and 'Process Explorer' windows to be opened in fullscreen mode, fixes #64306  (#64839)

Make sure `Dispose.register` does not allow registering new disposables after the base has been disposed

`register` can be called after `dispose` in some race conditions, especially when dealing with events. Previously in this case, `register` would continue to hold onto the newly registered objects and they would never be properly disposed. With this change, we now dispose of newly registered objects immediately and print a warning if the base has already been disposed