#41738 regression(apps): notifier accessor undefined in the Reader implementation

Proposed changes (including videos or screenshots)

Introduced in #41377

The way to instantiate the reader changed, causing an ordering issue.

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Steps to test or reproduce

Further comments

Summary by CodeRabbit

• Bug Fixes
  • Improved notification initialization so notification-related functionality is available reliably when needed.
  • Ensured notification and settings access remain consistent across supported access paths.
  • Fixed notification delivery through the application bridge.