Update JndiLocatorDelegate.isDefaultJndiEnvironmentAvailable() to call `getEnvironment()` on the `InitialContext` in order to actually trigger a NamingException if JNDI is not available. Issue: SPR-12223
Update JndiLocatorDelegate.isDefaultJndiEnvironmentAvailable() to call `getEnvironment()` on the `InitialContext` in order to actually trigger a NamingException if JNDI is not available. Issue: SPR-12223