Add test for CATEGORY_PRIVACY_CONTROLS

Adds the newly introduced `CATEGORY_PRIVACY_CONTROLS` to the existing test that safeguards against accidental key removal.


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Original Change: ag/35178170
Test: passed ABTD tests http://go/forrest-run/L82500030017326305
Bug: 431235865
Flag: TEST_ONLY

Change-Id: Ica79f11bf526d408957906ee56c338112c69deb5