### Godot version

v4.0.beta10.official [d0398f62f]

### System information

Windows 22H2, Compatibility, GeForce GTX 550 Ti

### Issue description

Multiple lines of error messages are copied without line breaks:
The script editor's error panel shows:
```
Line 6:Expected parameter name.
Line 6:Expected closing ")" after function parameters.
Line 6:Expected ":" after function declaration.
```
But selecting and copying them `ctrl c`, copies them without line breaks:
```
Line 6:Expected parameter name.Line 6:Expected closing ")" after function parameters.Line 6:Expected ":" after function declaration.
```


### Steps to reproduce

- start Godot
- open the attached project
- open the script `Node2D.gd`
The status bar shows an error message.
- click on the red circle with an x in it, and the number 3 to the right of the circle.
The script editor's error panel shows three messages:
>Line 6:Expected parameter name.
Line 6:Expected closing ")" after function parameters.
Line 6:Expected ":" after function declaration.

- select all three lines, and copy them `ctrl c`
- in the script editor, click on the empty line 12 to place the cursor there.
- paste `ctrl v`

### Expected
The copied lines should be pasted on three lines, as they appeared in the error panel.

### Observed
There are no line breaks, they appear on the same line:
```
Line 6:Expected parameter name.Line 6:Expected closing ")" after function parameters.Line 6:Expected ":" after function declaration.
```


### Minimal reproduction project

[issue, error messages copied without line breaks.zip](https://github.com/godotengine/godot/files/10361376/issue.error.messages.copied.without.line.breaks.zip)

String base_path = script->get_path().get_base_dir();
	String path = base_path.path_join(rel_path);
	return path.replace("///", "//").simplify_path();
}
void ScriptTextEditor::update_toggle_scripts_button() {
	code_editor->update_toggle_scripts_button();
}
void ScriptTextEditor::_update_connected_methods() {
	CodeEdit *text_edit = code_editor->get_text_editor();
	text_edit->set_gutter_width(connection_gutter, text_edit->get_line_height());
	for (int i = 0; i < text_edit->get_line_count(); i++) {
		text_edit->set_line_gutter_metadata(i, connection_gutter, Dictionary());
		text_edit->set_line_gutter_icon(i, connection_gutter, nullptr);
		text_edit->set_line_gutter_clickable(i, connection_gutter, false);
	}
	missing_connections.clear();
	if (!script_is_valid) {
		return;
	}
	Node *base = get_tree()->get_edited_scene_root();
	if (!base) {
		return;
	}
	
	Vector<Node *> nodes = _find_all_node_for_script(base, base, script);
	HashSet<StringName> methods_found;
	for (int i = 0; i < nodes.size(); i++) {
		List<Connection> signal_connections;