Cache tag invalidation on datastore drop

[kaise-lafrai]

Fixes [issue#]

QA Steps

Test 2.x branch to witness that a drop does not invalidate cache immediately.

• Set up vanilla site with 2.x
• run ddev dkan-sample-content
• run ddev drush dkan:datastore:import 3a187a87dc6cd47c48b6b4c4785224b7
• Confirm datastore results: curl https://test1.ddev.site/api/1/datastore/query/cedcd327-4e5d-43f9-8eb1-c11850fa7c55/0
• run ddev drush dkan:datastore:drop 3a187a87dc6cd47c48b6b4c4785224b7
• Confirm that results still appear even though we just dropped it: curl https://test1.ddev.site/api/1/datastore/query/cedcd327-4e5d-43f9-8eb1-c11850fa7c55/0

Test this branch to witness that a drop does invalidate cache immediately.

• check out this branch.
• Set up vanilla site
• run ddev dkan-sample-content
• run ddev drush dkan:datastore:import 3a187a87dc6cd47c48b6b4c4785224b7
• Confirm datastore results: curl https://test1.ddev.site/api/1/datastore/query/cedcd327-4e5d-43f9-8eb1-c11850fa7c55/0
• run ddev drush dkan:datastore:drop 3a187a87dc6cd47c48b6b4c4785224b7
• Confirm no datastore results: curl https://test1.ddev.site/api/1/datastore/query/cedcd327-4e5d-43f9-8eb1-c11850fa7c55/0

Checklist before requesting review

If any of these are left unchecked, please provide an explanation

• I have updated or added tests to cover my code
• I have updated or added documentation

[kaise-lafrai]

Tests have been updated. No documentation needed at this point.