Extend the expiration date of SuggestTiles histograms until 10/06.

These seem to be no longer needed on Android, and have not been used
in a while. We should consider retiring them once iOS completes
migration to horizontal render groups.

Change-Id: Ic7b66024b848ea6b9b7465f84f90e8f752c1d897
Fixed: 336307772
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5494786
Reviewed-by: Gang Wu <gangwu@chromium.org>
Commit-Queue: Gang Wu <gangwu@chromium.org>
Auto-Submit: Tomasz Wiszkowski <ender@google.com>
Cr-Commit-Position: refs/heads/main@{#1293768}