CogWindow: simplify how CogWidgets are rendered

Remove the need to specify the widgets width to be able to right them.
Instead widgets are rendered in a table which left/center/right align automatically.

Plugins/CogAI/Source/CogAI/Private/CogAIWindow_BehaviorTree.cpp

@@ -140,7 +140,7 @@ void FCogAIWindow_BehaviorTree::RenderContent()
             ImGui::EndMenu();
         }
 
-        FCogWindowWidgets::SearchBar(Filter);
+        FCogWindowWidgets::SearchBar("##Filter", Filter);
 
         ImGui::EndMenuBar();
     }

Plugins/CogAI/Source/CogAI/Private/CogAIWindow_Blackboard.cpp

@@ -46,7 +46,7 @@ void FCogAIWindow_Blackboard::RenderContent()
             ImGui::EndMenu();
         }
 
-        FCogWindowWidgets::SearchBar(Filter);
+        FCogWindowWidgets::SearchBar("##Filter", Filter);
 
         ImGui::EndMenuBar();
     }