#50260: ci: fix unsupported major in release board automation
Description of Change
The changes in #50081 accidentally conflated two different concepts: the major that ended support when the latest release branch was created, and the major that will end support in the next iteration.
This separates them back out into different values.
I'm manually cleaning up the label color changes that happened to the wrong versions as a result of this issue.
Checklist
- PR description included
Release Notes
Notes: none
Backports
No Backports Requested
This pull request doesn't have any backports requested or created for older release branches.
What are backports?
Backports are copies of changes made to the main branch that are applied to older release branches. They ensure that bug fixes and important changes are available in maintained older versions of Electron.
Semver Impact
Semantic Versioning helps users understand the impact of updates:
- Major (X.y.z): Breaking changes that may require code modifications
- Minor (x.Y.z): New features that maintain backward compatibility
- Patch (x.y.Z): Bug fixes that don't change the API
- None: Changes that don't affect using facing parts of Electron