[mojo] Update the codebase to Mojo v0.25.7#121

Merged

forfudan merged 2 commits intomainfrom

Dec 9, 2025

Commits on Dec 3, 2025

Re-factor all tests by using the test suite
forfudan
committed

Commits on Dec 6, 2025

Refine the tests and remove all prints within tests.
forfudan
committed