fix: update JS max_loops test assertion to match constant (1_000)

PR #1764 changed JS_BENCHMARKING_MAX_LOOPS from 100_000 to 1_000 but
the test was updated to assert 5_000 instead of 1_000.

Author: KRRT7

tests/languages/javascript/test_support_dispatch.py

@@ -182,9 +182,9 @@ def test_passes_loop_parameters(self, mock_vitest_runner: MagicMock, js_support:
 
             call_kwargs = mock_vitest_runner.call_args.kwargs
             assert call_kwargs["min_loops"] == 10
-            # JS/TS uses JS_BENCHMARKING_MAX_LOOPS (5_000) regardless of passed value
+            # JS/TS uses JS_BENCHMARKING_MAX_LOOPS (1_000) regardless of passed value
             # Actual loop count is limited by target_duration, not max_loops
-            assert call_kwargs["max_loops"] == 5_000
+            assert call_kwargs["max_loops"] == 1_000
             assert call_kwargs["target_duration_ms"] == 5000