### 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)

}
	
	warnings_panel->push_table(3);
	for (const ScriptLanguage::Warning &w : warnings) {
		Dictionary ignore_meta;
		ignore_meta["line"] = w.start_line;
		ignore_meta["code"] = w.string_code.to_lower();
		warnings_panel->push_cell();
		warnings_panel->push_meta(ignore_meta);
		warnings_panel->push_color(
				warnings_panel->get_theme_color(SNAME("accent_color"), SNAME("Editor")).lerp(warnings_panel->get_theme_color(SNAME("mono_color"), SNAME("Editor")), 0.5f));
		warnings_panel->add_text(TTR("[Ignore]"));
		warnings_panel->pop(); 
		warnings_panel->pop(); 
		warnings_panel->pop(); 
		warnings_panel->push_cell();
		warnings_panel->push_meta(w.start_line - 1);
		warnings_panel->push_color(warnings_panel->get_theme_color(SNAME("warning_color"), SNAME("Editor")));
		warnings_panel->add_text(TTR("Line") + " " + itos(w.start_line));
		warnings_panel->add_text(" (" + w.string_code + "):");
		warnings_panel->pop(); 
		warnings_panel->pop(); 
		warnings_panel->pop(); 
		warnings_panel->push_cell();
		warnings_panel->add_text(w.message);
		warnings_panel->pop(); 
	}
	warnings_panel->pop(); 
}
void ScriptTextEditor::_update_errors() {