Use a different icon for the debugger tab with both warnings and errors

This makes it possible to see if both errors and warnings were
pushed without having to open the tab.

editor/debugger/editor_debugger_node.cpp

@@ -261,10 +261,12 @@ void EditorDebuggerNode::_notification(int p_what) {
 			debugger_button->set_icon(Ref<Texture2D>());
 		} else {
 			debugger_button->set_text(TTR("Debugger") + " (" + itos(error_count + warning_count) + ")");
-			if (error_count == 0) {
-				debugger_button->set_icon(get_theme_icon("Warning", "EditorIcons"));
-			} else {
+			if (error_count >= 1 && warning_count >= 1) {
+				debugger_button->set_icon(get_theme_icon("ErrorWarning", "EditorIcons"));
+			} else if (error_count >= 1) {
 				debugger_button->set_icon(get_theme_icon("Error", "EditorIcons"));
+			} else {
+				debugger_button->set_icon(get_theme_icon("Warning", "EditorIcons"));
 			}
 		}
 		last_error_count = error_count;

editor/debugger/script_editor_debugger.cpp

@@ -130,10 +130,12 @@ void ScriptEditorDebugger::update_tabs() {
 		tabs->set_tab_icon(errors_tab->get_index(), Ref<Texture2D>());
 	} else {
 		errors_tab->set_name(TTR("Errors") + " (" + itos(error_count + warning_count) + ")");
-		if (error_count == 0) {
-			tabs->set_tab_icon(errors_tab->get_index(), get_theme_icon("Warning", "EditorIcons"));
-		} else {
+		if (error_count >= 1 && warning_count >= 1) {
+			tabs->set_tab_icon(errors_tab->get_index(), get_theme_icon("ErrorWarning", "EditorIcons"));
+		} else if (error_count >= 1) {
 			tabs->set_tab_icon(errors_tab->get_index(), get_theme_icon("Error", "EditorIcons"));
+		} else {
+			tabs->set_tab_icon(errors_tab->get_index(), get_theme_icon("Warning", "EditorIcons"));
 		}
 	}
 }

editor/icons/ErrorWarning.svg

@@ -0,0 +1 @@
+<svg height="8" viewBox="0 0 8 8" width="8" xmlns="http://www.w3.org/2000/svg"><path d="m4 0c-2.216 0-4 1.784-4 4s1.784 4 4 4z" fill="#ff5d5d"/><path d="m4 .00000003c2.216 0 4 1.78399997 4 3.99999997s-1.784 4-4 4z" fill="#ffdd65"/></svg>