search and highlight within a single note

### What

I hope I can search within a single note and the result of the searched item can be highighted on my android phone.
### Why

If the note is very long, It is not easy to find specific word in a single note on my android phone.
### How

The issue mentions no files, tests, or entry points. Start by locating the note editor and any existing search entry point, then determine how a single-note search should select and highlight matches on Android. Done means a user can search within one long note and see the matching text highlighted.

Written by the indexing model from the issue text.