[BUG] Button text is bold in iOS for buttons with type="submit"

[X] I have written a good issue

Describe the bug

If you have a kirby-button that has type="submit" then the button text will be bold in iOS. This is the case both in an iOS app and in Safari. On desktop this is not an issue, neither in Chrome nor Safari. I have not tested in Android.

Describe how to reproduce the bug

Add a kirby-button to a component
Set it's type to type="submit"
Open the component in iOS
See that the button text is bold

Which Kirby version was used?

9.2.1

What was the expected behavior?

The button text has regular weight.

Add any screenshots

Please complete the following information:

OS: iOS 17.3.1
Browser: Safari

Checklist:

The following tasks should be carried out in sequence in order to follow the process of contributing correctly.

Verification

To make sure the bug is not intended behaviour; it should be verified by a member of team Kirby before moving on to implementation.

[ ] Make sure the NOT verified label has been removed by a member of team Kirby; do not proceed until this is done.

Implementation

The contributor who wants to implement this issue should:

[ ] Make sure you have read: "Before you get coding".
[ ] Signal to others you are working on the issue by assigning yourself.
[ ] Create a branch from the develop branch following our branch naming convention.
[ ] Create a test that reproduces the bug following guidelines in: "The good: Test".
[ ] Write code to fix the bug

Review

Once the issue has been implemented and is ready for review:

[ ] Do a self-review.
[ ] Create a pull-request.

kirbydesign / designsystem