Make the Tab Preview size changeable and update the Preview when there's any changes

[nicolanapa]

After updating to 131.0b1, I've got the new tab preview feature and it's a nice feature but there can be some improvements.

It should have an option that changes its size (ex: 1, 2 (default), 3, 4, ...) (example in the image).

It should also update the preview when the website changes, ex: when there's a video (so make it refresh at the user's FPS / make an option based on FPS refresh: 0/15/30/60/120/165/... fps (for performance reasons)).

[Jon]

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[xan-vanb]

Very nice indeed. (There used to be an extension for that.) It would be more useful if one could have the option to make the preview window large enough to be able to read what’s there.