### 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)

emit_signal(SNAME("name_changed"));
	emit_signal(SNAME("edited_script_changed"));
}
void ScriptTextEditor::_update_warnings() {
	int warning_nb = warnings.size();
	warnings_panel->clear();
	bool has_connections_table = false;
	
	if (GLOBAL_GET("debug/gdscript/warnings/enable").booleanize()) {
		Node *base = get_tree()->get_edited_scene_root();
		if (base && missing_connections.size() > 0) {
			has_connections_table = true;
			warnings_panel->push_table(1);
			for (const Connection &connection : missing_connections) {
				String base_path = base->get_name();
				String source_path = base == connection.signal.get_object() ? base_path : base_path + "/" + base->get_path_to(Object::cast_to<Node>(connection.signal.get_object()));
				String target_path = base == connection.callable.get_object() ? base_path : base_path + "/" + base->get_path_to(Object::cast_to<Node>(connection.callable.get_object()));
				warnings_panel->push_cell();
				warnings_panel->push_color(warnings_panel->get_theme_color(SNAME("warning_color"), SNAME("Editor")));
				warnings_panel->add_text(vformat(TTR("Missing connected method '%s' for signal '%s' from node '%s' to node '%s'."), connection.callable.get_method(), connection.signal.get_name(), source_path, target_path));
				warnings_panel->pop(); 
				warnings_panel->pop(); 
			}
			warnings_panel->pop(); 
			warning_nb += missing_connections.size();
		}
	}
	code_editor->set_warning_count(warning_nb);
	if (has_connections_table) {
		warnings_panel->add_newline();