Add type tool tests for GlicActorControllerUiTest.

Currently the type tool only has the DELETE_EXISTING mode implemented,
so that is why there are not any tests for other modes.

Tested the following scenarios:
- Basic Type Succeeds
- Delete Existing Succeeds
- On Disabled Input Fails
- On Non-Existent Node Fails
- On Focus Redirect Succeeds
- Off-Screen Coordinate Fails
- On Dynamic Node Succeeds
- With Page Key Handler Succeeds
- By Coordinate With Page Key Handler Succeeds

Bug: b:444504983
Change-Id: I5de7af7bfd3ab09fd052da8cfe5b86ba735c7db3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6961356
Commit-Queue: Youseff Bourouphel <ybourouphael@google.com>
Reviewed-by: David Bokan <bokan@chromium.org>
Reviewed-by: Carlos Knippschild <carlosk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1522322}