Send modified metadata on Wiredash.trackEvent

[memishood]

Is your feature request related to a problem? Please describe.
I set metadata after every login attempt like this:

void _userSideEffect(User? user) {
    if (user != null) {
      Wiredash.of(context).modifyMetaData(
        (metadata) => metadata
          ..userId = user.id
          ..userEmail = user.email,
      );
    }
  }

When I track an event, it doesn't send the metadata that was added on login attempt, I need to provide the data every time manually.

await Wiredash.trackEvent('send_message');

Describe the solution you'd like
It would be very nice that Wiredash SDK sends the metadata automatically when trackEvent is called

Describe alternatives you've considered
Maybe this feature can depend on a bool enable/disable field for those who don't want to send metadata.

await Wiredash.trackEvent('send_message', withMetadata: true or false);