Start dev cycle for 2026.1 (#18680)
Start the dev cycle for the 20XY.Z release.
This will be a compatibility breaking release.
Complete:
- [x] New section in the change log.
- [x] Update NVDA version in `master`
- [x] Bump the add-on API compatibility in `master`
- [x] Update [`nvdaAPIVersions.json` to include the next
version](https://github.com/nvaccess/addon-datastore-transform)
- Re-run the last "Transform NVDA addons to views" on
[addon-datastore](https://github.com/nvaccess/addon-datastore/actions/workflows/transformDataToViews.yml)
to regenerate projections (views) for the add-on datastore API.
On merge:
- [ ] [Update auto milestone
ID](https://github.com/nvaccess/nvda/settings/variables/actions)
