Refactor lacros version skew filters

linux-lacros.interactive_ui_tests.filter would only apply to
non version skew tests. Version skew would have filters per
channel.

This is just a refactor of filters and should not cause any
test failures.

Change-Id: Ia16e1b79640c0cc265dbde855c631f24df3df820
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4540083


Commit-Queue: Sven Zheng <svenzheng@chromium.org>
Reviewed-by: Jenny Zhang <jennyz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1145706}