fix(tts): skip note tooltip text during narration

[codedogQBY]

Summary

• mark desktop note tooltip DOM as TTS-skippable
• add note tooltip selectors to the shared TTS skip list
• mirror the skip list in the Expo reader template and rebuild the generated mobile reader asset
• add a focused core test for injected note tooltip filtering

Refs #149

Verification

• pnpm --filter @readany/app-expo run build:reader
• pnpm --filter @readany/core test -- text-utils
• pnpm --filter @readany/core exec tsc --noEmit
• pnpm --filter @readany/app-expo exec tsc --noEmit
• pnpm --filter app exec tsc --noEmit
• pnpm exec biome check packages/core/src/tts/text-utils.ts packages/core/src/tts/text-utils.test.ts
• git diff --check

Note

This covers the #149 observation where TTS can read user notes/comments injected into the reader document. The repeat/jump symptoms still need validation with the existing TTS navigation PRs, so #149 should stay open.