Disallow loading icon from content URI to PipMenu

Bug: 278246904
Test: manually, with the PoC app attached to the bug
Merged-In: Ib3f5b8b6b9ce644fdf1173548d9078e4d969ae2e
Change-Id: Idbd4081bf464e2b3420d4c3fd22ca37867d26bc0
1 file changed