TreeView: Item text alignment shifts for nodes with expand/collapse icons when the width is narrow and text overflows (T1329043) (#33661)

Author: EugeniyKiyashko

packages/devextreme-scss/scss/widgets/base/treeView/_index.scss

@@ -12,6 +12,7 @@
     @include dx-icon($collapse-icon-name);
 
     display: flex;
+    flex-shrink: 0;
     align-items: center;
     justify-content: center;
     font-size: $font-size;