Delay price drop and product image acquisition on Tab Resumption

This arm introduces a new arm on the price drop variation of
Tab resumption which acquires the price drop and product image after
the card is rendered and updates the card (if applicable). This
is to reduce the overall latency of the card.

Bug: 450903479
Change-Id: I1b11230f21e82711e305615a02640072c3e61db8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7028739
Commit-Queue: David Maunder <davidjm@chromium.org>
Reviewed-by: Chris Lu <thegreenfrog@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1528446}
NOKEYCHECK=True
GitOrigin-RevId: ab4c90c7e4c265487c0f2388e2c2ce6b50e27728

• chrome/browser/content_suggestions/ui_bundled/magic_stack/magic_stack_module_contents_factory.mm[diff]
• chrome/browser/content_suggestions/ui_bundled/magic_stack/magic_stack_ranking_model.mm[diff]
• chrome/browser/content_suggestions/ui_bundled/tab_resumption/BUILD.gn[diff]
• chrome/browser/content_suggestions/ui_bundled/tab_resumption/tab_resumption_consumer.h[Added - diff]
• chrome/browser/content_suggestions/ui_bundled/tab_resumption/tab_resumption_consumer_source.h[Added - diff]
• chrome/browser/content_suggestions/ui_bundled/tab_resumption/tab_resumption_item.h[diff]
• chrome/browser/content_suggestions/ui_bundled/tab_resumption/tab_resumption_item.mm[diff]
• chrome/browser/content_suggestions/ui_bundled/tab_resumption/tab_resumption_mediator.mm[diff]
• chrome/browser/content_suggestions/ui_bundled/tab_resumption/tab_resumption_view.h[diff]
• chrome/browser/content_suggestions/ui_bundled/tab_resumption/tab_resumption_view.mm[diff]
• chrome/browser/flags/about_flags.mm[diff]