Fix Otter Stop level drop blocked by wrong-streak reset on correct go responses

[Copilot]

After any wrong answer, forceGoNext inserts a guaranteed go trial. Because a correct go response was resetting consecutiveWrong to 0, false alarms could never accumulate to the 3-in-a-row threshold needed to drop the level — the forced go always cleared the streak first.

Changes

• game.js: In the correct-go branch, preserve consecutiveWrong instead of zeroing it. This makes correct go responses neutral for both streak counters, matching the symmetric design already used for level advancement (only no-go inhibitions count toward the correct streak; only no-go inhibitions now reset the wrong streak).

// Before
staircaseState = { value: level, consecutiveCorrect, consecutiveWrong: 0 };

// After
staircaseState = { value: level, consecutiveCorrect, consecutiveWrong };

• game.test.js: Updated the test asserting a correct go resets consecutiveWrong. Replaced the single "correct response resets wrong streak" staircase test with three targeted tests:
  • correct no-go inhibition resets the wrong streak
  • correct go response does not reset the wrong streak
  • 3 false alarms interspersed with correct forced-go responses correctly trigger a level drop