FLAG_MOTION and FLAG_UPSCALE were both declared as 1 << 26 on separate
branches, and a merge combined the two const blocks without a conflict.
Add a spec that checks every flag from GetAllModelConfigUsecases() is a
single bit that no other flag uses, so a collision fails the tests.
FLAG_MOTION itself moves to 1 << 27.
Assisted-by: Claude Code:claude-sonnet-5-5
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
