Count published entries only for entries_count

[arthurperton]

Fixes #3539.

[what-the-diff]

• Added a new index to the Associations Index
• Updated TermRepository::entriesCount() and TaxonomyTermsStore::sync() methods to filter by status when counting entries for a term
• Fixed tests in TermEntriesTest that were failing due to changes made in First #1 & Pagination #2 above

[arthurperton]

Weird. I had all kinds of (seemingly unrelated) tests failing and now after merging in 3.4 all troubles are gone. Ready for review I guess 😄.

[jasonvarga]

I agree this needs to be fixed but I don't think this is it.

The count of entries should include entries of any status, similar to in #7334 how we include drafts in the cp. If we were to use entries_count in the cp somewhere for example, we'd want to include the drafts.

With this solution, the drafts are always filtered out.