Incorrect Joplin search results

### When searching for pages, the results shown aren't always accurate.

## To Reproduce
- Go to http://joplin-staging.herokuapp.com/admin/pages/search/?q=test%20page
- the results should look something like this 👇

- Why is the first result to be shown? The 2nd and 3rd match the search. But why the first result? It neither has "test" nor "page" in the title.

## Additional context
- After changing the Title of “Request a dead animal pickup” to “Something different”, we still return this as the top result.
- Is that because the original name that was saved is the one being searched? And, when it’s updated it’s not being updated to the search filter?

Issue that could be related depending on how this is solved...

- https://github.com/cityofaustin/techstack/issues/3974

Reproduce the issue at the admin pages search URL with the provided query and compare the returned titles with the screenshots. Trace how page titles are indexed and updated after the title change, and review related issue #3974. Done means results match the current page titles and unrelated pages no longer rank first.

Written by the indexing model from the issue text.