### 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)

EditorDebuggerNode::get_singleton()->set_breakpoint(script->get_path(), p_row + 1, code_editor->get_text_editor()->is_line_breakpointed(p_row));
}
void ScriptTextEditor::_lookup_symbol(const String &p_symbol, int p_row, int p_column) {
	Node *base = get_tree()->get_edited_scene_root();
	if (base) {
		base = _find_node_for_script(base, base, script);
	}
	ScriptLanguage::LookupResult result;
	if (ScriptServer::is_global_class(p_symbol)) {
		EditorNode::get_singleton()->load_resource(ScriptServer::get_global_class_path(p_symbol));
	} else if (p_symbol.is_resource_file()) {
		List<String> scene_extensions;
		ResourceLoader::get_recognized_extensions_for_type("PackedScene", &scene_extensions);
		if (scene_extensions.find(p_symbol.get_extension())) {
			EditorNode::get_singleton()->load_scene(p_symbol);
		} else {
			EditorNode::get_singleton()->load_resource(p_symbol);
		}
	} else if (script->get_language()->lookup_code(code_editor->get_text_editor()->get_text_for_symbol_lookup(), p_symbol, script->get_path(), base, result) == OK) {
		_goto_line(p_row);
		switch (result.type) {
			case ScriptLanguage::LOOKUP_RESULT_SCRIPT_LOCATION: {
				if (result.script.is_valid()) {
					emit_signal(SNAME("request_open_script_at_line"), result.script, result.location - 1);
				} else {
					emit_signal(SNAME("request_save_history"));
					goto_line_centered(result.location - 1);