chore: fix datastore query behavior for LR

[tstirrat15]

Description

The public.yaml integration test was failing because an assertion that didn't have associated rels was still returning resources. This ended up being because the subject in the datastore query referenced the base type instead of the subject's type.

I also refactored a few more tests.

Changes

• Use the subject type in the datastore query
• Refactor a few more tests

Testing

Review.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.66%. Comparing base (9f73d87) to head (66bea73).

Files with missing lines	Patch %	Lines
pkg/query/datastore.go	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2830      +/-   ##
==========================================
- Coverage   75.72%   75.66%   -0.05%     
==========================================
  Files         460      460              
  Lines       55048    55052       +4     
==========================================
- Hits        41678    41650      -28     
- Misses      10484    10509      +25     
- Partials     2886     2893       +7     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.