Add mobile tables inspector sheet

src/RolemasterDb.App/Components/Pages/Tables.razor

@@ -91,6 +91,8 @@
                 </aside>
             }
         </div>
+
+        <TablesInspectorSheet SelectedCellDetail="SelectedCellDetail" OnClose="ClearSelectedCell" />
     }
 </section>
 
@@ -700,6 +702,12 @@
         selectedCell = selection;
     }
 
+    private Task ClearSelectedCell()
+    {
+        selectedCell = null;
+        return Task.CompletedTask;
+    }
+
     private void NormalizeViewStateForCurrentDetail()
     {
         referenceMode = NormalizeMode(referenceMode);