Add a broad try-catch to AppFunctionSchemaParser and attribute parsing for joinableType.

Also update the generated schema's names to be unique for package as in AppFunctionStaticMetadataParserImpl.

Change-Id: I6e011dc0441e2b095d8d3c880405d098b8f9cffa
Flag: EXEMPT Code not used yet
Test: atest AppsIndexerTests
Bug: 380729091
5 files changed