[popover][tooltip] Fix popup auto resize glitches

[atomiks]

• I have followed (at least) the PR section of the contributing guide.

Fixes two issues with popup auto resizing:

1. Content could collapse when transitioning from a larger trigger payload to a smaller trigger payload (noticeable with interruptions)
2. After the side changes due to a collision, the anchoring styles wouldn't be cleaned up, so the popup would jump incorrectly when transitioning between triggers if the anchoring styles shouldn't be applied for the given side

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Fix: https://stackblitz.com/edit/qaqmumnc?file=src%2FApp.tsx

While for tooltips this doesn't seem to visibly happen on our docs, it happens visibly in Stackblitz (on master)

[pkg-pr-new]

• vite-css-base-ui-example

  pnpm add https://pkg.pr.new/mui/base-ui/@base-ui/react@3591
  

  pnpm add https://pkg.pr.new/mui/base-ui/@base-ui/utils@3591
  

commit: 7ddc6a5

[mui-bot]

Bundle size report

Bundle	Parsed size	Gzip size
@base-ui/react	▼-143B(-0.03%)	🔺+92B(+0.07%)

Details of bundle changes

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