RadioButton: Fix flex issue in master for radio buttons (#29664)

packages/grafana-ui/src/components/Forms/RadioButtonGroup/RadioButton.tsx

@@ -80,7 +80,7 @@ const getRadioButtonStyles = stylesFactory((theme: GrafanaTheme, size: RadioButt
       background: ${bg};
       cursor: pointer;
       z-index: 1;
-      flex: ${fullWidth ? `1 0 0` : 0};
+      flex: ${fullWidth ? `1 0 0` : 'none'};
       text-align: center;
       user-select: none;