fix(card): add "id" field to form and "form" field to button to improve from handling

[krishnagkmit]

PR: fix(card): add form id and button form prop

Issue

• In one of the examples for the Card component used a button placed outside the <form/> without a form prop, which is incorrect and can break form submission behaviour.

Fixes:

• Adds an id prop to Form and a form prop to Button so buttons outside forms can target them natively.

Why

• Enables declarative form targeting for buttons that are not nested in a form (better accessibility, simpler
  markup).

Usage

<Form id="signup-form">...</Form>

// Button outside the form
<Button form="signup-form" type="submit">Sign up</Button>

[vercel]

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