[Autofill] Local Card Save Fallback on Server Card Upload Failure

This CL adds functionality to the server card upload to silently save
the card locally if the server card upload fails.

Manually tested that this works through https://rsolomakhin.github.io/autofill/.

Bug: 1495153
Change-Id: I3b512030cb4250a2ac4052b8fbabd34e073f0e2f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5013164
Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Commit-Queue: Darwin Yang <darwinyang@chromium.org>
Reviewed-by: Peter Kotwicz <pkotwicz@chromium.org>
Code-Coverage: findit-for-me@appspot.gserviceaccount.com <findit-for-me@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1223216}