Bug 1718588 [wpt PR 29523] - [VirtualKeyboard] Add WPT tests for the VK feature....

Bug 1718588 [wpt PR 29523] - [VirtualKeyboard] Add WPT tests for the VK feature., a=testonly

Automatic update from web-platform-tests
[VirtualKeyboard] Add WPT tests for the VK feature.

This patch adds wpt tests for the new VK API.
Explainers and Design Doc:
https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/VirtualKeyboardPolicy/explainer.md
https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/VirtualKeyboardAPI/explainer.md
https://docs.google.com/document/d/1I0LUNxK_gP5IaNQsbYN6gL6Zpm71XzduCKkublU5o5Q/edit?usp=sharing

Bug: 856269

Change-Id: I4f3ef35f71499a45e53e3fe79dd1df59257b8e6a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2993938
Commit-Queue: Anupam Snigdha <snianu@microsoft.com>
Reviewed-by: Keith Lee <keithlee@chromium.org>
Cr-Commit-Position: refs/heads/master@{#898372}

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wpt-commits: 80a417662387b6eda904607d78ad246c5d8bf191
wpt-pr: 29523