feat: ion-refresher "isOpen" flag

[Spinnenzunge]

Prerequisites

• [x] I have read the Contributing Guidelines.
• [x] I agree to follow the Code of Conduct.
• [x] I have searched for existing issues that already include this feature request, without success.

Describe the Feature Request

Introduce an isOpen flag to ion-refresher component, so we can trigger the refresher via boolean flag from controller.

Describe the Use Case

We have a lot of pages that trigger an initial load of data when entering the page. For that we want to show a loading state. But additional to that, we also want to provide the possibility to always refresh the data with pull down to refresh. For that we are using ion-refresher.

Now we have two "loading indicators" that we need to handle differently, one spinner that is shown on a flag and the ion-refresher that needs to be completed via an event. It would be great if we could just use ion-refresher for the whole loading indicator on the page alltogether by allowing the component to show and hide the spinner via a boolean flag.

Describe Preferred Solution

Add isOpen flag similar as done in inline modal https://ionicframework.com/docs/api/modal#using-isopen

Describe Alternatives

No response

Related Code

No response

Additional Information

No response