[lib] Introduce useOnScreenEntryEditableThreadInfos

Summary:
Replace onScreenEntryEditableThreadInfos with hook which consumes useThreadsWithPermission introduced in D11924.

Depends on D11924

Test Plan:
flow + close reading for now

Checked ThreadPickerModal on web (skipped native, but assuming everything is the same since lib) and ensured that threads appeared as expected.

Reviewers: ashoat, ginsu, tomek, varun, will

Reviewed By: ashoat

Differential Revision: https://phab.comm.dev/D11925