[useAnchorPositioning] Disable auto axis flipping

[atomiks]

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

Based on #810, auto side axis-based flipping should be off by default.

Changing the algorithm in Floating UI will probably require considerable effort/time to resolve in a way that works in most situations (for instance, the alignment chosen seems incorrect based on the preferred side).

For now this is a good enough default to use as other libraries use this.

Two workarounds exist to this prop:

• --available-width can be used to ensure left/right side popups don't overflow on narrow screens while preserving the preferred side axis.
• A manual JavaScript media query based on the viewport width can be used to conditionally pass in a different preferred side.

[mui-bot]

Netlify deploy preview

https://deploy-preview-817--base-ui.netlify.app/

Generated by 🚫 dangerJS against c081791