[play] Add a new attribute type for GMS Play in order to distinguish with the old M0 flow.

Bug: 260712395
Test: wwlogcat https://paste.googleplex.com/5204101439684608
Flag: ENABLE_SEARCH_UNINSTALLED_APPS. OFF
Change-Id: I5dc75b7aef9cd778c59167347500b923626e4953
1 file changed