Add extended unit tests for MusicBlocks.run behavior

[badassscoder]

Summary

This PR adds extended unit test coverage for the MusicBlocks.run method, ensuring correct execution flow, listener cleanup, and safe handling of edge cases.

Changes

• Added comprehensive tests for MusicBlocks.run
• Verified synth preparation and runtime state reset
• Ensured all mice are executed correctly
• Validated cleanup of turtle event listeners
• Confirmed safe behavior with empty mouse lists and null stage references

Test Coverage

• ✔️ Synth preparation via logo initialization
• ✔️ Reset of firstNoteTime
• ✔️ Execution of all active mice
• ✔️ Proper removal of event listeners from turtles
• ✔️ Graceful handling of empty and null runtime states

Scope

• Tests only
• No production code changes

Verification

• All existing and new tests pass successfully

[github-actions]

✅ All Jest tests passed! This PR is ready to merge.

[badassscoder]

@walterbender this test is ready could you please review it

[walterbender]

please address the conflict

[github-actions]

✅ All Jest tests passed! This PR is ready to merge.

[badassscoder]

@walterbender can you please review it

[walterbender]

another conflict :(

[badassscoder]

@walterbender sorry for the bad commits i think there is something which i missed because of this is occuring i will make all the changes properly and then call out for review.

[github-actions]

✅ All Jest tests passed! This PR is ready to merge.

[badassscoder]

@walterbender could you please check the commit again