This PR makes the `Std.Time.Format` import in
`Lean.Elab.Tactic.Grind.Annotated` private rather than public,
preventing the entire `Std.Time` infrastructure (including timezone
databases) from being re-exported through `import Lean`.
The `grindAnnotatedExt` extension is kept private, with a new public
accessor function `isGrindAnnotatedModule` exposed for use by
`LibrarySuggestions.Basic`.
This should address the +2.5% instruction increase on `import Lean`
observed after merging #11332.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
---------
Co-authored-by: Claude <noreply@anthropic.com>
This PR activates the `grind_annotated` command in
`Init.Data.List.Lemmas` by removing the TODO comment and uncommenting
the command.
This PR depends on #11346 (implement `grind_annotated` command) and
should be merged after that PR (and after CI has done an
`update-stage0`.
