upload: bypass branch editor with explicit branch and -y

When uploading across multiple projects with --yes and an explicit
branch specified (via --current-branch / -c or --branch / --br),
repo previously still opened the interactive branch selection editor.

If an explicit branch and --yes are provided, bypass the interactive
editor and upload all matching pending branches directly.

Bug: 553024110
Test: python3 -m pytest tests/
Test: flake8 subcmds/upload.py tests/test_subcmds_upload.py
Test: isort --check subcmds/upload.py tests/test_subcmds_upload.py
Change-Id: I104619603f6e0539d05b01d3eb0292a9145d58db
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/622661
Tested-by: Arif Kasim <arifkasim@google.com>
Reviewed-by: Gavin Mak <gavinmak@google.com>

subcmds/upload.py

@@ -435,6 +435,18 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
         self._UploadAndReport(opt, [branch], people)
 
     def _MultipleBranches(self, opt, pending, people):
+        if opt.yes and (opt.current_branch or opt.branch):
+            todo = [
+                branch
+                for _, avail in pending
+                for branch in avail
+                if branch is not None
+            ]
+            if not todo:
+                _die("nothing ready for upload")
+            self._UploadAndReport(opt, todo, people)
+            return
+
         projects = {}
         branches = {}