Fix upload save IBAN metrics for kAccept case

This CL fixes an issue where the "upload save IBAN accepted" case was
not being logged. The root cause was that current_bubble_type_ was
being set to IbanBubbleType::kUploadInProgress right after the
user clicked the save button. However, the logging logic for the bubble
closing reason did not account for kUploadInProgress in upload
scenarios. This change ensures that the accepted upload case is properly
logged.
This issue is introduced at http://crrev.com/c/5983935 when
loading effect is added to the upload bubble.

Bug: b:413338121
Change-Id: Id04bf41f27e26522245de203c233477a5c88403d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6488936
Commit-Queue: Qihui Zhao <qihuizhao@google.com>
Reviewed-by: Olivia Saul <jsaul@google.com>
Reviewed-by: Jan Keitel <jkeitel@google.com>
Cr-Commit-Position: refs/heads/main@{#1451791}