Radio: fix validation when placed in RadioGroup (#6569)

Author: stsrki

Source/Blazorise/Base/BaseInputComponent.cs

@@ -165,7 +165,7 @@ protected virtual Task OnBeforeSetParametersAsync( ParameterView parameters )
     /// <returns>A task that represents the asynchronous operation.</returns>
     protected virtual async Task OnAfterSetParametersAsync( ParameterView parameters )
     {
-        if ( ParentValidation is not null )
+        if ( UsesValidation && ParentValidation is not null )
         {
             if ( paramValueExpression.Defined )
                 await ParentValidation.InitializeInputExpression( paramValueExpression.Value );
@@ -818,6 +818,11 @@ protected virtual string GetFormatedValueExpression()
     /// </summary>
     protected bool UseValidationOnBlur => Options?.AccessibilityOptions?.UseValidationOnBlur == true;
 
+    /// <summary>
+    /// Gets a value indicating whether this component should register itself as the input for the parent <see cref="Validation"/>.
+    /// </summary>
+    protected virtual bool UsesValidation => true;
+
     /// <summary>
     /// Gets a value indicating whether an explicit <c>aria-labelledby</c> parameter was supplied.
     /// </summary>

Source/Blazorise/Components/Radio/Radio.razor.cs

@@ -113,6 +113,9 @@ private async void OnRadioChanged( object sender, RadioCheckedChangedEventArgs<T
     /// </summary>
     protected bool ParentIsRadioGroup => ParentRadioGroup is not null;
 
+    /// <inheritdoc/>
+    protected override bool UsesValidation => ParentRadioGroup is null;
+
     /// <summary>
     /// True if radio should look as a regular button.
     /// </summary>