experimental: Animation Panel Label Tolltips (#5138)

## Description

<img width="484" alt="image"
src="https://github.com/user-attachments/assets/79c99480-8e36-4d77-a4f7-6a95aa6a35a4"
/>

<img width="408" alt="image"
src="https://github.com/user-attachments/assets/45a05ce8-05ad-4b68-8bc5-3397cf1c7a05"
/>


## Steps for reproduction

1. click button
2. expect xyz

## Code Review

- [ ] hi @kof, I need you to do
  - conceptual review (architecture, feature-correctness)
  - detailed review (read every line)
  - test it on preview

## Before requesting a review

- [ ] made a self-review
- [ ] added inline comments where things may be not obvious (the "why",
not "what")

## Before merging

- [ ] tested locally and on preview environment (preview dev login:
0000)
- [ ] updated [test
cases](https://github.com/webstudio-is/webstudio/blob/main/apps/builder/docs/test-cases.md)
document
- [ ] added tests
- [ ] if any new env variables are added, added them to `.env` file

Author: istarkov