Add SDK version checks for Trash feature

The Trash feature relies on DocumentsContract APIs introduced after Baklava and is not backward compatible. These checks prevent runtime errors and test failures.

Bug: 442400425
Test: atest DocumentsUIGoogleTests:com.android.documentsui.services.TrashJobTest
Flag: com.android.documentsui.flags.enable_trash_flow_ro
Change-Id: I369ba0971236613973761719a960d1dcab9598b2