Apply suggestions from code review

Co-authored-by: Anna Henningsen <[email protected]>

Author: nirinchev

.github/workflows/smoke-tests.yml

@@ -33,4 +33,4 @@ jobs:
         run: npm ci
 
       - name: Run smoke tests
-        run: npm run test-smoke
+        run: npx mongodb-runner exec -- sh -c 'env MONGOSH_SMOKE_TEST_SERVER=$MONGODB_URI npm run test-smoke'

packages/cli-repl/src/run.ts

@@ -337,7 +337,7 @@ function suppressExperimentalWarnings() {
         return;
       }
 
-      originalEmit(warning, ...args);
+      return originalEmit(warning, ...args);
     };
   }
 }