Revert "[Android][CCT] Restrict secondary-toolbar RemoteViews to 1P"

This reverts commit 8a2476998be1693cc409e35eb99e81c57ac3782c.

Reason for revert: This is limiting it to 1P. Reverting for now.

Failure Link: <LINK TO FAILURE>

Original change's description:
> [Android][CCT] Restrict secondary-toolbar RemoteViews to 1P
>
> Only honor CustomTabsIntent.EXTRA_REMOTEVIEWS and the matching
> CustomTabsSession#setSecondaryToolbarViews update path when the
> launching intent / session is from a trusted first-party caller,
> mirroring the existing handling of
> EXTRA_ENABLE_EMBEDDED_MEDIA_EXPERIENCE. RemoteViews supplied by
> arbitrary apps may carry setImageViewUri actions that load and decode
> caller-controlled content:// data in the browser process, which is not
> something we want to do on behalf of third-party embedders.
>
> TAG=agy
>
> Bug: 523486138
> Change-Id: I169ec798a2d8a236174309a9c9dc9d6b4798f2cd
> Fixed: 523486138
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/8085647
> Commit-Queue: Moe Adel <adelm@google.com>
> Reviewed-by: Jinsuk Kim <jinsukkim@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1661350}

Bug: 523486138
Bug: 523486138
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: Ia3f274cf4f1987d63684ac19e723837dd1d60474
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/8089063
Reviewed-by: Sinan Sahin <sinansahin@google.com>
Commit-Queue: Moe Adel <adelm@google.com>
Cr-Commit-Position: refs/heads/main@{#1661435}