DateTimeStamp v1.2.3-beta

Changes

• Replaces the old Add as keyword behavior with date search indexing for date and date-time stamps.
• Adds compact YMD keywords like 20260618 without changing the visible stamp format.
• Enables indexing for YMD-formatted stamps and leaves time-only stamps unindexed.
• Bumps plugin version to 1.2.3-beta / version code 6.

Verification

• npm test -- --runInBand
• npx tsc --noEmit
• npm run lint
• CI=true RCT_NO_LAUNCH_PACKAGER=true ./buildPlugin.sh