[roll] Roll fuchsia Revert "[Honeydew][ui] e2e tests should temporarily ignore pixel alpha values"

This reverts commit c061093aad67e0d428895098963a09aa2e53cf53.

Reason for revert: Ignoring pixel alpha values turns out to not be sufficient when comparing two screenshots with the same content but differing opacity. A more comprehensive solution is needed.

Original change's description:
> [Honeydew][ui] e2e tests should temporarily ignore pixel alpha values
>
> With the introduction of opacity-based brightness, e2e tests must ignore pixel alpha values to avoid failures caused by auto-brightness changing image opacity. Opacity-based brightness is only a temporary solution until the backlight driver becomes available, at which point we will revert this change back.
>
> Original-Bug: b/397960210
> Change-Id: Ia230c7555068cc34156aabcede45c50807999a11
> Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1229144
> Reviewed-by: Jianpeng Chao <[email protected]>
> Commit-Queue: Auto-Submit <[email protected]>
> Fuchsia-Auto-Submit: Justin Kobler <[email protected]>

Original-Bug: b/397960210
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1236286
Original-Revision: a27a6996f12f484d7deed7ba41ccb385309dea2c
GitOrigin-RevId: a457da5eba2bdd5a07c2bfef5b77cc00f297c7d5
Change-Id: I817bdfa5a65f09651636c8864dcc68cf54188320

Author: Justin Kobler

stem

@@ -11,7 +11,7 @@
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-             revision="4fbe60fd0a31e5c34cb9be0aba09411f52cf4a30"/>
+             revision="a27a6996f12f484d7deed7ba41ccb385309dea2c"/>
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