### 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)

const bool using_single_quotes = EDITOR_GET("text_editor/completion/use_single_quotes");
	String escaped = str.c_escape();
	
	
	if (!using_single_quotes) {
		escaped = escaped.replace("\\'", "\'");
	}
	return escaped.quote(using_single_quotes ? "'" : "\"");
}
void ScriptTextEditor::drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from) {
	Dictionary d = p_data;
	CodeEdit *te = code_editor->get_text_editor();
	Point2i pos = te->get_line_column_at_pos(p_point);
	int row = pos.y;
	int col = pos.x;
	if (d.has("type") && String(d["type"]) == "resource") {
		te->remove_secondary_carets();
		Ref<Resource> res = d["resource"];
		if (!res.is_valid()) {
			return;
		}
		if (res->get_path().is_resource_file()) {
			EditorNode::get_singleton()->show_warning(TTR("Only resources from filesystem can be dropped."));
			return;
		}
		te->set_caret_line(row);
		te->set_caret_column(col);
		te->insert_text_at_caret(res->get_path());