Log Mount/Unmount/Reconnect/Disconnect in the Component Track (#32816)

Stacked on #32815.

To be able to differentiate mounted subtrees from updated subtrees. This
adds a yellow entry above the component subtree that mounted. This is
added both to the render phase, mutation effect phase, layout effect
phase and passive effect phase.

<img width="962" alt="Screenshot 2025-04-03 at 10 41 02 PM"
src="https://github.com/user-attachments/assets/13777347-07e8-458c-9127-8675ef08b54f"
/>

Ideally we could probably give an annotation to the component instead of
adding a whole other line which is also a color that's kind of
distracting. However, not all components are included and keeping track
of which one is the first one below is kind of annoying. Adding a marker
to all components is kind of noisy. So this is a compromise. It's only
one per depth so it won't make it too deep even on larger trees.

If this is an unmount, those are added to the mutation effect phase for
the layout unmounts and passive unmount effect phase. Since these never
have a render, they're not in the render phase.

<img width="1010" alt="Screenshot 2025-04-03 at 11 05 57 PM"
src="https://github.com/user-attachments/assets/ab39f27e-13be-4281-94fa-9391bb293fd2"
/>

For showing / hiding `<Activity>` the terminology "Reconnect" and
"Disconnect" is used instead.

Author: sebmarkbage