tree a0a74e714403b28889f19fb2af7def7067b311a2
parent 5232ab20e608dd7e78b2b7725ffdbed7ce4e92b8
author Googler <jcater@google.com> 1701695640 -0800
committer Copybara-Service <copybara-worker@google.com> 1701695718 -0800

Clean up Starlark transition processing.

The flags being read by a transition are by definition a subset of all flags, and typically are a much smaller subset, so let's process the smaller set instead of every flag in the configuration.

Work towards platform-based flags: #19409.

PiperOrigin-RevId: 587681561
Change-Id: I8b329ef3e9447db08a0cedb9bb1b5ef60fe6458f