Adding method to check if the drawable is themed or not am: fc33a2fa am: 4ed5fea6 am: 5908e4a9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/libs/systemui/+/14686825

Change-Id: I2dca5b78eff67b0e1d1b05e53c22764aee67a2a9