[drawer] Unmark Drawer preview

[atomiks]

Summary

• Promote the drawer namespace to stable Drawer.
• Remove DrawerPreview entirely as a breaking API change.
• Remove preview wording from the docs and update drawer examples and tests to use the stable import.

[pkg-pr-new]

• base-ui-tanstack-start

• vite-css-base-ui-example

  pnpm add https://pkg.pr.new/mui/base-ui/@base-ui/react@4293
  

  pnpm add https://pkg.pr.new/mui/base-ui/@base-ui/utils@4293
  

commit: 25669d9

[mui-bot]

Bundle size report

Bundle	Parsed size	Gzip size
@base-ui/react	▼-7B(0.00%)	▼-2B(0.00%)

Details of bundle changes

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[atomiks]

Codex Review

Overview

This patch promotes Drawer from the preview namespace to the stable Drawer export and updates the docs, demos, tests, and experiments to use the new name. It also changes the components index badge from Preview to New so the docs still call out Drawer as recently introduced.

Findings (None)

No blocking issues found in this patch.

Confidence: 5/5

I reviewed the full upstream/master...HEAD diff and did a second pass across rendering behavior, accessibility/semantics, API shape, maintainability, performance risk, and test coverage. I also reran pnpm typescript, pnpm test:jsdom Drawer --no-watch, and pnpm test:chromium Drawer --no-watch on the current rebased branch; all passed.

[LukasTy]

Nice, congrats. 👏
WDYT, would keeping the alias export make sense to avoid the BC? 🤔