message: fix: validate endpoint before go next
  fix: validate endpoint before go next
diff: @@ -161,4 +161,8 @@ export const createFlashSystemPayload: CreatePayload<FlashSystemState> = (
  };
  export const flashSystemCanGoToNextStep: CanGoToNextStep<FlashSystemState> = (state) =>
  - !!state.endpoint && !!state.username && !!state.password && !!state.poolname;
  + !!state.endpoint &&
  + isValidUrl(state.endpoint) &&
  + !!state.username &&
  + !!state.password &&
  + !!state.poolname;
  