Correct FileDialog Theme overrides

Introduced in 15fd025f900

Fixes #89818

(cherry picked from commit 13d83dd4d73bc65d5367129fe9b26c55d9687cfe)

scene/gui/file_dialog.cpp

@@ -152,15 +152,15 @@ void FileDialog::_notification(int p_what) {
 			dir_up->end_bulk_theme_override();
 
 			dir_prev->begin_bulk_theme_override();
-			dir_prev->add_theme_color_override("icon_color_normal", theme_cache.icon_normal_color);
-			dir_prev->add_theme_color_override("icon_color_hover", theme_cache.icon_hover_color);
+			dir_prev->add_theme_color_override("icon_normal_color", theme_cache.icon_normal_color);
+			dir_prev->add_theme_color_override("icon_hover_color", theme_cache.icon_hover_color);
 			dir_prev->add_theme_color_override("icon_focus_color", theme_cache.icon_focus_color);
 			dir_prev->add_theme_color_override("icon_color_pressed", theme_cache.icon_pressed_color);
 			dir_prev->end_bulk_theme_override();
 
 			dir_next->begin_bulk_theme_override();
-			dir_next->add_theme_color_override("icon_color_normal", theme_cache.icon_normal_color);
-			dir_next->add_theme_color_override("icon_color_hover", theme_cache.icon_hover_color);
+			dir_next->add_theme_color_override("icon_normal_color", theme_cache.icon_normal_color);
+			dir_next->add_theme_color_override("icon_hover_color", theme_cache.icon_hover_color);
 			dir_next->add_theme_color_override("icon_focus_color", theme_cache.icon_focus_color);
 			dir_next->add_theme_color_override("icon_color_pressed", theme_cache.icon_pressed_color);
 			dir_next->end_bulk_theme_override();