ChatControlBase: Rework drag and drop

3 jobs for drag-drop-file-message-input in 3 minutes and 35 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Test
passed #15184
run-appdata

00:00:07

passed #15183
run-tests

00:03:15

 
  Build
passed #15185
run-build

00:00:12