Scheduler navigation buttons submit containing form. Fixes #2035.

Author: akorchev

Radzen.Blazor/RadzenScheduler.razor

@@ -16,9 +16,9 @@
         {
             <div class="rz-scheduler-nav">
                 <div class="rz-scheduler-nav-prev-next">
-                    <button tabindex="0" class="rz-button rz-prev" @onclick=@OnPrev title="@PrevText"><RadzenIcon Icon="chevron_left" /></button>
-                    <button tabindex="0" class="rz-button rz-next" @onclick=@OnNext title="@NextText"><RadzenIcon Icon="chevron_right" /></button>
-                    <button tabindex="0" class="rz-button rz-today" @onclick=@OnToday title="@TodayText">@TodayText</button>
+                    <button type="button" tabindex="0" class="rz-button rz-prev" @onclick=@OnPrev title="@PrevText"><RadzenIcon Icon="chevron_left" /></button>
+                    <button type="button" tabindex="0" class="rz-button rz-next" @onclick=@OnNext title="@NextText"><RadzenIcon Icon="chevron_right" /></button>
+                    <button type="button" tabindex="0" class="rz-button rz-today" @onclick=@OnToday title="@TodayText">@TodayText</button>
                 </div>
                 <div class="rz-scheduler-nav-title">@SelectedView?.Title</div>
                 <div class="rz-scheduler-nav-views">