TextInput: Don't bubble backspace or arrow keys

Like mentioned before, it's not too complicated to make these not
bubble - just some added 'return false's.

I wrapped the whole block in a try-finally so that keepCursorInRange
could always be called at the end without any significant code structure
change, so that means the git diff is a little wonky - best viewed with
the -w (ignore whitespace changes) option.

0 files changed, 0 insertions, 0 deletions