Disable second order vjp tests in RunStateHypothesisTest.test_vjp if JAX_SKIP_SLOW_TESTS=true
Description:
- Disable second order vjp tests in RunStateHypothesisTest.test_vjp if JAX_SKIP_SLOW_TESTS=true to reduce the test execution time
- especially for TSAN CI job where this test takes ~700 seconds to pass with the recent 3.13 cpython
- Removed optional deps for 3.14