feat(material/radio): provide mat-radio-container-no-side-margin class as it's done for mat-checkbox

[rb-mwindh]

Feature Description

When setting up radio buttons without label, the label container still adds a padding, making the radio-button wider than neccessary.

A css class mat-radio-container-no-side-margin could easily be added in the same way as done for mat-checkbox, allowing use to get rid of the padding when there is no label.

Use Case

I'm implementing a SCSS theming framework for corporate design rules for Angular Material components.
Thus I need to provide styles for both cases, radiobutton with and without labels.

One of the use cases of radiobuttons without labels is having them in table cells. They would be "labelled" by the column header.

Reproduction: https://stackblitz.com/edit/angular-ivy-erstgu?file=src/app/app.component.css

[ramprakashram]

@crisbeto Can i take up this issue ???

[angular-robot]

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