Make the layer tree show duplicate branches where they are used multiple times in the graph

[mTvare6]

Fixes #2153

[Keavon]

!build

[github-actions]

📦 Build Complete for 79f5bee
https://420d13e4.graphite.pages.dev

[Keavon]

With the following graph setup, upon closing the node graph or switching to the Select tool, we enter an infinite loop.

Here's what the profiler shows is running in the infinite loop.

[Keavon]

If, during testing, you end up with the document autosaved and the browser freezing, you may have trouble opening localhost again after closing then revisiting the localhost:8080 tab. If that occurs, you may need to quickly use F12 to open dev tools and expand IndedexDB storage to clear it, potentially fast enough before the infinite loop begins rendering dev tools unresponsive. Here's how to clear it:

Chrome:

Firefox:

[mTvare6]

Seems to be the case that changing order works fine: