feat(overlay): CDK overlay should use native html dialog element

[ErfanNaz]

Feature Description

since there is now the browser native dialog element, cdk overlay can use this to get better browser native behavior.

Use Case

get better browser native behavior.

[kbrilla]

dialog is fit for dialog element but here popover is a better solution, but still only partially for the main container as popover element does not have something as layer behavior as cdk overlay has