fix(modal): respect card-style modal spec for iPadOS

[liamdebeasi]

Pull request checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been reviewed and added / updated if needed (for bug fixes / features)
• Build (npm run build) was run locally and any changes were pushed
• Lint (npm run lint) has passed locally and any fixes were made for failures

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

What is the current behavior?

Issue Number: #20700

What is the new behavior?

• updated animation to account for iPadOS card modal spec

Does this introduce a breaking change?

• Yes
• No

Other information

[DwieDima]

@liamdebeasi

since Ionic Version 5.0.7 it's no longer possible to override --width and --height of card-style-modal.
In dev build 5.1.0-dev.202003171608.9d9a02f, it was.

[liamdebeasi]

@DwieDima Please open a new issue.