Messaging: allow selecting text inside the selected message am: 78ecab8743 am: 476671be4a am: 1abe606ee5 am: db5364911f

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Messaging/+/1754232

Change-Id: I98e77b40dfe6b3d88af831a2ca9b1dfa6d7c980e