IDEA-269021 reusing named colors doesn't work if there is no icons section

GitOrigin-RevId: 8530a7ca91f511c4c0eb2ded0f0e66c450d495e6

platform/platform-impl/src/com/intellij/ide/ui/UITheme.java

@@ -141,12 +141,12 @@ public final class UITheme {
       theme.providerClassLoader = provider;
     }
 
+    initializeNamedColors(theme);
+
     if (theme.icons == null || theme.icons.isEmpty()) {
       return theme;
     }
 
-    initializeNamedColors(theme);
-
     theme.patcher = new IconPathPatcher() {
       @Nullable
       @Override