### 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)

code_editor->get_text_editor()->clear_breakpointed_lines();
}
void ScriptTextEditor::set_tooltip_request_func(const Callable &p_toolip_callback) {
	Variant args[1] = { this };
	const Variant *argp[] = { &args[0] };
	code_editor->get_text_editor()->set_tooltip_request_func(p_toolip_callback.bindp(argp, 1));
}
void ScriptTextEditor::set_debugger_active(bool p_active) {
}
Control *ScriptTextEditor::get_base_editor() const {
	return code_editor->get_text_editor();
}
Variant ScriptTextEditor::get_drag_data_fw(const Point2 &p_point, Control *p_from) {
	return Variant();
}
bool ScriptTextEditor::can_drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from) const {
	Dictionary d = p_data;
	if (d.has("type") &&
			(String(d["type"]) == "resource" ||
					String(d["type"]) == "files" ||
					String(d["type"]) == "nodes" ||
					String(d["type"]) == "obj_property" ||
					String(d["type"]) == "files_and_dirs")) {
		return true;
	}
	return false;
}
static Node *_find_script_node(Node *p_edited_scene, Node *p_current_node, const Ref<Script> &script) {