Minor comments and whitespace fixes.

Signed-off-by: Danilo Aimini <82231674+AMZN-daimini@users.noreply.github.com>

Code/Framework/AzToolsFramework/AzToolsFramework/UI/Outliner/EntityOutliner.qss

@@ -18,13 +18,14 @@ AzToolsFramework--EntityOutlinerWidget QTreeView
     selection-background-color: transparent;
 }
 
+
+/* 	
+ *  Entity Outliner handles hover and selected state of items via code,
+ *  so we need to override the AzQtComponents::Treeview style.
+ */
 AzToolsFramework--EntityOutlinerWidget QTreeView::branch:hover
 , AzToolsFramework--EntityOutlinerWidget QTreeView::item:hover
-{
-    background: transparent;
-}
-
-AzToolsFramework--EntityOutlinerWidget QTreeView::branch:selected
+, AzToolsFramework--EntityOutlinerWidget QTreeView::branch:selected
 , AzToolsFramework--EntityOutlinerWidget QTreeView::item:selected
 , AzToolsFramework--EntityOutlinerWidget QTreeView::branch:selected:active
 , AzToolsFramework--EntityOutlinerWidget QTreeView::item:selected:active

Code/Framework/AzToolsFramework/AzToolsFramework/UI/Outliner/EntityOutlinerTreeView.cpp

@@ -186,7 +186,6 @@ namespace AzToolsFramework
         const bool isSelected = selectionModel()->isSelected(index);
         const bool isHovered = (index == indexAt(m_mousePosition)) && isEnabled;
 
-
         // Paint the branch Selection/Hover Rect
         PaintBranchSelectionHoverRect(painter, rect, isSelected, isHovered);