IndexDB filesystem provider does not support file watching

[bpasero]

It looks like the IndexDB file system provider is not able to support watching:

vscode/src/vs/platform/files/browser/indexedDBFileSystemProvider.ts

Lines 229 to 231 in f1d92e7

	watch(resource: URI, opts: IWatchOptions): IDisposable {
	return Disposable.None;
	}

As a consequence, the storage implementation in the browser is unable to detect changes from other windows targeting global scope because it is using file watching for that purpose.

If we cannot support detecting changes from a different browser tab to the same IndexDB instance, then I think we have to close this "as designed".

//cc @sandy081

[sandy081]

/duplicate

duplicate of #107854

[sandy081]

More info:

It seems IndexedDB is not having an API to listen to changes done in other tabs -

Open Issue: w3c/IndexedDB#51

We need to have a workaround in our code to trigger changes.