accelerators: Do not include fake keyboards in aliasing

The input device settings controller does internal work to decide if a
given keyboard is "real" or not. Make sure all keyboards which are used
for aliasing are considered "valid" by the settings controller.

Fixed: b/283009807
Change-Id: Ia2879b9fc4b4276524dedaee1941e3d9c0e87a8a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4544406


Commit-Queue: David Padlipsky <dpad@google.com>
Reviewed-by: Jimmy Gong <jimmyxgong@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1145587}