fix for #57661. fix some icon / twisty alignment issues.

r=shliang, sr=sspitzer.  patch by andreas.premstaller@uibk.ac.at (Andreas Premstaller)

themes/classic/global/win/tree.css

@@ -204,7 +204,7 @@ treecell.propertylist
 
 .treecell-indent > .tree-cell-primary-icon 
   {
-    padding-left          : 14px;
+    padding-left          : 11px;
   }
 
 treeitem[container="true"] > treerow > .treecell-indent > .tree-cell-primary-icon 

themes/modern/global/tree.css

@@ -114,7 +114,7 @@ tree:focus > treechildren treeitem[selected="true"][current="true"] > treerow >
 }
 
 .treecell-indent > .tree-cell-primary-icon {
-  padding-left: 14px;
+  padding-left: 12px;
 }
 
 treeitem[container="true"] > treerow > .treecell-indent > .tree-cell-primary-icon {