merge_pr_50883

Add larger outline for elements with interesttarget

Per the explainer:

https://open-ui.org/components/interest-invokers.explainer/#keyboard

It is desirable to have a way for users to "know" that an element
has the interesttarget attribute, and therefore that there are additional actions they can take to invoke it.

Bug: 326681249
Change-Id: I77fbc2f535e29cbed24ce4e4e8227136548aefab
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6283846
Auto-Submit: Mason Freed [email protected]
Commit-Queue: Mason Freed [email protected]
Reviewed-by: Traian Captan [email protected]
Cr-Commit-Position: refs/heads/main@{#1423292}