[InputFile] Make it work icw a loading Button

[MarvinKlein1508]

Pull Request

📖 Description

When a FluentButton is being used as an anchor to trigger a FluentInputFile in combination with the property Loading then the registered event will be lost once the button renders again to display the loading style. This PR fixes this by reattaching the event when it's necessary.

🎫 Issues

• fix: Setting Loading in FluentButton bound to FluentInputFile breaks it #2754

✅ Checklist

General

• I have added tests for my changes.
• I have tested my changes.
• I have updated the project documentation to reflect my changes.
• I have read the CONTRIBUTING documentation and followed the standards for this project.

Component-specific

• I have added a new component
• I have added Unit Tests for my new component
• I have modified an existing component
• I have validated the Unit Tests for an existing component

⏭ Next Steps

Perhaps you might want to add a test-case for this. I sadly don't know how to do this but I will take a look on it when you add one to learn from it! 😀

seems like a glitch. No need to hold merging back