Revert "[iOS][Toolbar] Fix updateLocationBarHeightForFullscreenProgress crash"

This reverts commit 3ca0feb20a67903cb2e39f239b0aae82eee3e653.

Reason for revert: Breaks animation on iPad 

Original change's description:
> [iOS][Toolbar] Fix updateLocationBarHeightForFullscreenProgress crash
>
> The bug indicates a crash when updating the constraints.
> This CL updates the constraints only if the view already has a window.
>
> Bug: 40069602
> Change-Id: Ia3342cf735b9094b17b9b42558c7c90ee20feb47
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5691654
> Auto-Submit: Christian Xu <christianxu@chromium.org>
> Reviewed-by: Gauthier Ambard <gambard@chromium.org>
> Commit-Queue: Christian Xu <christianxu@chromium.org>
> Code-Coverage: findit-for-me@appspot.gserviceaccount.com <findit-for-me@appspot.gserviceaccount.com>
> Cr-Commit-Position: refs/heads/main@{#1326171}

Bug: 40069602
Change-Id: I6b31de9e28342e70cb44763c923bcb702c3e9bce
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5701643
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Auto-Submit: Christian Xu <christianxu@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1326735}