### 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)

case EDIT_TOGGLE_WORD_WRAP: {
			TextEdit::LineWrappingMode wrap = code_editor->get_text_editor()->get_line_wrapping_mode();
			code_editor->get_text_editor()->set_line_wrapping_mode(wrap == TextEdit::LINE_WRAPPING_BOUNDARY ? TextEdit::LINE_WRAPPING_NONE : TextEdit::LINE_WRAPPING_BOUNDARY);
		} break;
		case SEARCH_FIND: {
			code_editor->get_find_replace_bar()->popup_search();
		} break;
		case SEARCH_FIND_NEXT: {
			code_editor->get_find_replace_bar()->search_next();
		} break;
		case SEARCH_FIND_PREV: {
			code_editor->get_find_replace_bar()->search_prev();
		} break;
		case SEARCH_REPLACE: {
			code_editor->get_find_replace_bar()->popup_replace();
		} break;
		case SEARCH_IN_FILES: {
			String selected_text = tx->get_selected_text();
			
			
			emit_signal(SNAME("search_in_files_requested"), selected_text);
		} break;
		case REPLACE_IN_FILES: {
			String selected_text = tx->get_selected_text();
			emit_signal(SNAME("replace_in_files_requested"), selected_text);
		} break;
		case SEARCH_LOCATE_FUNCTION: {
			quick_open->popup_dialog(get_functions());
			quick_open->set_title(TTR("Go to Function"));
		} break;