[dev-v5][Toast] Fix toast sizing in Safari on macOS and iOS

[MarvinKlein1508]

Pull Request

📖 Description

This PR fixes sizing issues on iOS and macOS for FluentToast by setting height: auto.

Before desktop:

After desktop:

Before mobile:

After mobile:

✅ 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

I have tested this changes on Safari on macOS and iOS and on Chrome, Edge and Firefox. I also tested the positioning. You still need to test for Android.

[Copilot]

Pull request overview

Fixes Safari (macOS/iOS) sizing issue for FluentToast by adding height: auto to the toast CSS.

Changes:

• Add height: auto to the toast styles in FluentToast.ts