Correcting `NeedsRefill` logic by checking for the most updated geo.

Existing Behavior:
The manager was checking to see if the current geo needed a refill
before a possible new geo was set. This means that if a new geo
was found in a token refill, the refill check would not have
accurately checked if another refill was needed. This means a
refill could have been scheduled sooner than needed for a geo that
we do not currently care about.

Bug: 338975162
Change-Id: I1f32d1134fbf96cda31758ff2532c6315593f59a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5754374
Reviewed-by: Dustin Mitchell <djmitche@chromium.org>
Reviewed-by: Brianna Goldstein <brgoldstein@google.com>
Commit-Queue: Abhi Patel <abhipatel@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1336145}