AAPT2: GetBag infinite recursion fix

Style resources with circular parental dependencies caused infinite
recursion when calling AssetManager2::GetBag. This fix allows recursion
to cease when a circular dependency is found.

Bug: 77928512
Change-Id: Ib900c36ab1aef5da5b03234a9484c4dad3b63c02
Test: Manual test of b/77928512 and duplicates of 74493983