feat(StringFilter): support auto filter after input filter text (#6899)

Author: ArgoZhang

src/BootstrapBlazor/Components/Filters/StringFilter.razor

@@ -4,7 +4,7 @@
 @if (IsHeaderRow)
 {
     <div class="@FilterRowClassString">
-        <BootstrapInput @bind-Value="@_value1" ShowLabel="false" SkipValidate="true"></BootstrapInput>
+        <BootstrapInput Value="@_value1" OnValueChanged="OnValueChanged" ShowLabel="false" SkipValidate="true"></BootstrapInput>
         <FilterButton Items="Items" @bind-Value="_action1" OnSelectedItemChanged="_ => OnFilterAsync()" OnClearFilter="OnClearFilter" />
     </div>
 }

src/BootstrapBlazor/Components/Filters/StringFilter.razor.cs

@@ -128,4 +128,10 @@ public override async Task SetFilterConditionsAsync(FilterKeyValueAction filter)
         }
         await base.SetFilterConditionsAsync(filter);
     }
+
+    private async Task OnValueChanged(string? val)
+    {
+        _value1 = val;
+        await OnFilterAsync();
+    }
 }