### 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)

return edit_hb;
}
void ScriptTextEditor::clear_edit_menu() {
	if (editor_enabled) {
		memdelete(edit_hb);
	}
}
void ScriptTextEditor::set_find_replace_bar(FindReplaceBar *p_bar) {
	code_editor->set_find_replace_bar(p_bar);
}
void ScriptTextEditor::reload(bool p_soft) {
	CodeEdit *te = code_editor->get_text_editor();
	Ref<Script> scr = script;
	if (scr.is_null()) {
		return;
	}
	scr->set_source_code(te->get_text());
	bool soft = p_soft || scr->get_instance_base_type() == "EditorPlugin"; 
	scr->get_language()->reload_tool_script(scr, soft);
}
PackedInt32Array ScriptTextEditor::get_breakpoints() {
	return code_editor->get_text_editor()->get_breakpointed_lines();
}
void ScriptTextEditor::set_breakpoint(int p_line, bool p_enabled) {
	code_editor->get_text_editor()->set_line_as_breakpoint(p_line, p_enabled);
}
void ScriptTextEditor::clear_breakpoints() {