[E2E] PROMOTE TO BLOCKING: note_index_spec.rb

What does this MR do?

Promotes the following e2e tests to the blocking bucket:

1. Data Stores When using elasticsearch API to search for a public note finds note that matches note body | Testcase | Spec metrics

This MR was created based on data from reliable e2e test report: #468608 (closed)

(This MR was automatically generated by gitlab_quality-test_tooling at 2024-06-24 02:05:34 UTC)