fix(material/button): fix ripple style for all types of buttons

[isantone]

The style for ripple were not added for mat-fab and mat-mini-fab buttons in #26568.
Spotting the issue on demo is a little bit tricky, because there are always a button (mat-button, mat-icon-button), which provides the global style for .mat-mdc-button-ripple. But without this components mat-fab button will look as on the screenshot below.

I was considering adding the overflow: hidden into fab.scss, but the _button-base.scss file is more appropriate in my opinion.

The ripple problem without overflow: hidden:

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[crisbeto]

LGTM

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