Code review comment for lp://staging/~michael-sheldon/oxide/fix-1384357

This works well and fixes the original issue tracked by bug #1384357.

However I’m seeing a similar issue (that was mentioned in https://bugs.launchpad.net/oxide/+bug/1384357/comments/5): after clearing the text field with the X, swiping the app away from the right edge to reveal the app previews restores the preedit text.