Fix action name completion for `Input.get_{axis,vector}`

(cherry picked from commit e6dd71d22792d2fd41966d2550bae9d9921415d7)

core/os/input.cpp

@@ -141,11 +141,9 @@ void Input::get_argument_options(const StringName &p_function, int p_idx, List<S
 	const String quote_style = EDITOR_GET("text_editor/completion/use_single_quotes") ? "'" : "\"";
 
 	String pf = p_function;
-	if (p_idx == 0 &&
-			(pf == "is_action_pressed" || pf == "action_press" || pf == "action_release" ||
-					pf == "is_action_just_pressed" || pf == "is_action_just_released" ||
-					pf == "get_action_strength" || pf == "get_action_raw_strength" ||
-					pf == "get_axis" || pf == "get_vector")) {
+	if ((p_idx == 0 && (pf == "is_action_pressed" || pf == "action_press" || pf == "action_release" || pf == "is_action_just_pressed" || pf == "is_action_just_released" || pf == "get_action_strength" || pf == "get_action_raw_strength")) ||
+			(p_idx < 2 && pf == "get_axis") ||
+			(p_idx < 4 && pf == "get_vector")) {
 		List<PropertyInfo> pinfo;
 		ProjectSettings::get_singleton()->get_property_list(&pinfo);