fix(material-experimental/radio): remove input click handler (#18868)

Author: andrewseguin

src/material-experimental/mdc-radio/radio.html

@@ -12,8 +12,7 @@
            [attr.aria-label]="ariaLabel"
            [attr.aria-labelledby]="ariaLabelledby"
            [attr.aria-describedby]="ariaDescribedby"
-           (change)="_onInputChange($event)"
-           (click)="_onInputClick($event)">
+           (change)="_onInputChange($event)">
     <div class="mdc-radio__background">
       <div class="mdc-radio__outer-circle"></div>
       <div class="mdc-radio__inner-circle"></div>