V36 Gate 8: Keep gate package tests greenable

Run the aggregate BTD Jest suite through explicit Jest invocation with forceExit so the Gate Quality workflow exits after passing tests instead of waiting on open handles.

Verified locally with the aggregate BTD suite, Gate 8 checker, and diff hygiene.

Author: geraldarthurdavis

.github/workflows/bitcode-gate-quality.yml

@@ -245,7 +245,7 @@ jobs:
 
       - name: Test gate packages
         run: |
-          pnpm --filter @bitcode/btd test
+          pnpm --filter @bitcode/btd exec jest --config jest.config.cjs --runInBand --forceExit
           pnpm --filter @bitcode/btd test -- --runTestsByPath __tests__/btc-fee-operation.test.ts
           pnpm --filter @bitcode/btd test -- --runTestsByPath __tests__/btd.test.ts
           pnpm --filter @bitcode/btd test -- --runTestsByPath __tests__/v32-ledger-btd-settlement-failure-states.test.ts