Fix Tree row padding when chevron isn't present (#6545)

* fix treeview stories controls

* fix tree row padding if no checkbox and fix chromatic

Author: LFDanLu

packages/@react-spectrum/tree/chromatic/TreeView.chromatic-fc.tsx renamed to packages/@react-spectrum/tree/chromatic-fc/TreeView.stories.tsx

@@ -140,7 +140,7 @@ const treeCellGrid = style({
   display: 'grid',
   width: 'full',
   alignItems: 'center',
-  gridTemplateColumns: ['minmax(0, auto)', 'minmax(0, auto)', 'minmax(0, auto)', 'minmax(0, auto)', 'minmax(0, auto)', '1fr', 'minmax(0, auto)', 'auto'],
+  gridTemplateColumns: ['minmax(0, auto)', 'minmax(0, auto)', 'minmax(0, auto)', 10, 'minmax(0, auto)', '1fr', 'minmax(0, auto)', 'auto'],
   gridTemplateRows: '1fr',
   gridTemplateAreas: [
     'drag-handle checkbox level-padding expand-button icon content actions actionmenu'

packages/@react-spectrum/tree/chromatic/TreeView.chromatic.tsx renamed to packages/@react-spectrum/tree/chromatic/TreeView.stories.tsx

@@ -144,22 +144,16 @@ TreeExampleStatic.story = {
   },
   argTypes: {
     selectionMode: {
-      control: {
-        type: 'radio',
-        options: ['none', 'single', 'multiple']
-      }
+      control: 'radio',
+      options: ['none', 'single', 'multiple']
     },
     selectionStyle: {
-      control: {
-        type: 'radio',
-        options: ['checkbox', 'highlight']
-      }
+      control: 'radio',
+      options: ['checkbox', 'highlight']
     },
     disabledBehavior: {
-      control: {
-        type: 'radio',
-        options: ['selection', 'all']
-      }
+      control: 'radio',
+      options: ['selection', 'all']
     },
     disallowEmptySelection: {
       control: {