fix(dialog): Remove the incorrect descendant element

[Thejashwini123]

closes : #3126

Violation : The element with role "button" contains descendants with roles "dialog" which are ignored by browsers

Before

After

Issue : The accessibility violation occurs because aria-owns moves the dialog inside the button in the accessibility tree, which is not valid for a button element.

Carbon version : 5.57.1

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[Thejashwini123]

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[Thejashwini123]

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