[meta] Project Browser 2.0.0-alpha9

Removing 🐛 TypeError: filterComponent is null when switching project browser tabs Active , which is from Ye Olden Days of internal tabbing within the Svelte app, and therefore likely no longer applicable.

Re-saving to trigger a refresh.

Descoping ✨ Expose sources as local actions underneath a "Browse" local task Active since it is postponed.

A couple more issues got committed, so refreshing. Love that green.

Adding 📌 Cleanup of Project object contract/constructor Active and ✨ Allow activators to generically decorate Project objects Active as must-haves because:

• They both do a massive amount of cleanup, greatly improving maintainability and clearing the path for future enhancements
• They are passing tests, and one has already been reviewed by @chrisfromredfin
• It would be a real shame to tag alpha9 without them

It's out the door, so this issue has run its course!

Automatically closed - issue fixed for 2 weeks with no activity.