Add support for opening app bundle URLs with StoreKit.

Previously, the string matching was limited to opening URLs specifying
single apps using a StoreKit dialog. This adds supports to app bundles
as well. App bundles have a slightly different URL scheme.

Bug: 395605695
Change-Id: I46c02a6136c8c45fdc9076529e938241a178ed1e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6249179
Commit-Queue: Jonathan Heinberg <heinberg@google.com>
Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Reviewed-by: Mark Cogan <marq@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1418546}