feat!: search improvements (#10113)

* feat!: search improvements

* Make it opt-in via _searchIndexUseMetadata

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Co-authored-by: Yufei Huang <yufeih@live.com>

fix: Skip header/footer rendering for cover page (#10416)

* fix: skip header/footer rendering for cover page

* test(snapshot): update snapshots 3d9aef5

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Co-authored-by: filzrev <filzrev@users.noreply.github.com>
Co-authored-by: Yufei Huang <yufeih@live.com>

fix: Skip header/footer rendering for cover page (#10416)

* fix: skip header/footer rendering for cover page

* test(snapshot): update snapshots 3d9aef5

---------

Co-authored-by: filzrev <filzrev@users.noreply.github.com>
Co-authored-by: Yufei Huang <yufeih@live.com>

build(deps): bump Verify.Xunit from 28.3.1 to 28.3.2 in the xunit gro…

…up (#10401)

Bumps the xunit group with 1 update: [Verify.Xunit](https://github.com/VerifyTests/Verify).


Updates `Verify.Xunit` from 28.3.1 to 28.3.2
- [Release notes](https://github.com/VerifyTests/Verify/releases)
- [Commits](VerifyTests/Verify@28.3.1...28.3.2)

---
updated-dependencies:
- dependency-name: Verify.Xunit
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: xunit
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build(deps): bump Verify.Xunit from 28.3.1 to 28.3.2 in the xunit gro…

…up (#10401)

Bumps the xunit group with 1 update: [Verify.Xunit](https://github.com/VerifyTests/Verify).


Updates `Verify.Xunit` from 28.3.1 to 28.3.2
- [Release notes](https://github.com/VerifyTests/Verify/releases)
- [Commits](VerifyTests/Verify@28.3.1...28.3.2)

---
updated-dependencies:
- dependency-name: Verify.Xunit
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: xunit
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build(deps): bump Verify.Xunit from 28.2.1 to 28.3.1 in the xunit gro…

…up (#10396)

Bumps the xunit group with 1 update: [Verify.Xunit](https://github.com/VerifyTests/Verify).


Updates `Verify.Xunit` from 28.2.1 to 28.3.1
- [Release notes](https://github.com/VerifyTests/Verify/releases)
- [Commits](VerifyTests/Verify@28.2.1...28.3.1)

---
updated-dependencies:
- dependency-name: Verify.Xunit
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: xunit
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

perf: Optimize CountWordInText (#10050)

* use SearchValues for special chars lookup on NET 8
* only allocate delimiter chars once
* ensure no closure allocations with static lambdas

revert: downgrade playwright to 1.40.0

fix: clean up PDF command help options

fixes #9696

chore: update test snapshot (#9657)