fix(ui): improve inconsistent element types provided to forwardRef

[JoschuaSchneider]

Fixes some inconsistent types provided to React.forwardRef in both alert and card components.

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[shadcn]

@JoschuaSchneider What are your thoughts on replacing the headings in <Card />? See #351

[JoschuaSchneider]

@JoschuaSchneider What are your thoughts on replacing the headings in <Card />? See #351

I agree with the points made and removing them would make the components more flexible.

I propose changing it to a paragraph per default and offer asChild to enable customisation depending on the context a Card is used in.

What do you think?

[shadcn]

I propose changing it to a paragraph per default

Agreed.

and offer asChild to enable customisation depending on the context a Card is used in.

Genius.