Fix tooltip message of button that opens groups/signals dock

Signed-off-by: Yevhen Babiichuk (DustDFG) <dfgdust@gmail.com>
Co-authored-by: A Thousand Ships <96648715+AThousandShips@users.noreply.github.com>

Author: dustdfg

editor/gui/scene_tree_editor.cpp

@@ -369,26 +369,26 @@ void SceneTreeEditor::_add_nodes(Node *p_node, TreeItem *p_parent) {
 					msg_temp += String::utf8("•  ") + String(E.name) + "\n";
 				}
 			}
-		}
-		if (num_connections >= 1 || num_groups >= 1) {
-			if (num_groups < 1) {
-				msg_temp += "\n";
-			}
-			msg_temp += TTR("Click to show signals dock.");
+		} else {
+			msg_temp += "\n";
 		}
 
 		Ref<Texture2D> icon_temp;
 		SceneTreeEditorButton signal_temp = BUTTON_SIGNALS;
+		String msg_temp_end = TTR("Click to show signals dock.");
+
 		if (num_connections >= 1 && num_groups >= 1) {
 			icon_temp = get_editor_theme_icon(SNAME("SignalsAndGroups"));
 		} else if (num_connections >= 1) {
 			icon_temp = get_editor_theme_icon(SNAME("Signals"));
 		} else if (num_groups >= 1) {
 			icon_temp = get_editor_theme_icon(SNAME("Groups"));
 			signal_temp = BUTTON_GROUPS;
+			msg_temp_end = TTR("Click to show groups dock.");
 		}
 
 		if (num_connections >= 1 || num_groups >= 1) {
+			msg_temp += msg_temp_end;
 			item->add_button(0, icon_temp, signal_temp, false, msg_temp);
 		}
 	}