YourSavedInfo: Extract entries list element from autofill ai section

This is the first change in a chain. New autofill ai entries list
element will be reused on a new "Your saved info" subpages ("Identity
docs" and "Travel"). The following changes will extend entries list
functionality to filter entries by their type.

Bug: 451349831
Change-Id: I244ad45e0bd5a0efbba3fabdf7ec8f134316d634
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7032102
Reviewed-by: Julia Sobiech <jsobiech@google.com>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Stanislav Mikheyev <mikhe@google.com>
Cr-Commit-Position: refs/heads/main@{#1530134}