Support multi-entrypoint on TextReadingScreen

This is a preparation cl, no actual usage on the screen yet. Comment out
the @ProvidePreferenceScreen until we're ready to support it.

Bug: 372776688
Test: Build succeed
Test: Verify when search for display size and text only one entry shown
Flag: EXEMPT no actual usage
Change-Id: Iebcd5a116e7e38974341ddbe56a322d7596ad1e5
9 files changed