In `get_terms_to_edit()`, call `get_object_term_cache()` before priming cache with `wp_get_object_terms()`.

In `get_inline_data()`, do the same.

On list table screens with taxonomies in the admin, this dramatically reduces the number of database queries (3x less). Even more so with a persistent object cache (5x less).

Props johnbillion, jeffstieler, wonderboymusic.
Fixes #18968.


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