### 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)

}
		}
		te->set_caret_line(row);
		te->set_caret_column(col);
		te->insert_text_at_caret(text_to_drop);
		te->grab_focus();
	}
	if (d.has("type") && String(d["type"]) == "obj_property") {
		te->remove_secondary_carets();
		
		
		const String text_to_drop = _quote_drop_data(String(d["property"]));
		te->set_caret_line(row);
		te->set_caret_column(col);
		te->insert_text_at_caret(text_to_drop);
		te->grab_focus();
	}
}
void ScriptTextEditor::_text_edit_gui_input(const Ref<InputEvent> &ev) {
	Ref<InputEventMouseButton> mb = ev;
	Ref<InputEventKey> k = ev;
	Point2 local_pos;
	bool create_menu = false;
	CodeEdit *tx = code_editor->get_text_editor();
	if (mb.is_valid() && mb->get_button_index() == MouseButton::RIGHT && mb->is_pressed()) {
		local_pos = mb->get_global_position() - tx->get_global_position();
		create_menu = true;
	} else if (k.is_valid() && k->is_action("ui_menu", true)) {
		tx->adjust_viewport_to_caret(0);
		local_pos = tx->get_caret_draw_pos(0);