Remove the @hide annotation for the dynamic index of Settings Search.

- Remove the @hide of queryDynamicRawData api in the
  SearchIndexablesProvider.
- Remove the @hide of DYNAMIC_INDEXABLES_RAW and
  DYNAMIC_INDEXABLES_RAW_PATH strings in the SearchIndexablesContract.

Fixes: 143670349
Test: manual

Change-Id: Ic33060c21211a1ca0d56fe3329d19b53f4576dfe
3 files changed