### Godot version

9f12e7b52d944

### System information

arch linux

### Issue description

Attempting to edit from the editor a typed array exported from a tool script fails, any value is immediately reset, setters are never called.

### Steps to reproduce

Create a script such as follows and try to add and then change items of the array in the inspector.


```gdscript
@tool
extends Node

@export var x: Array[String]
```

### Minimal reproduction project

n/a
text->set_secret(p_enabled);
}
void EditorPropertyText::set_placeholder(const String &p_string) {
	text->set_placeholder(p_string);
}
void EditorPropertyText::_bind_methods() {
}
EditorPropertyText::EditorPropertyText() {
	HBoxContainer *hb = memnew(HBoxContainer);
	add_child(hb);
	text = memnew(LineEdit);
	hb->add_child(text);
	add_focusable(text);
	text->set_h_size_flags(SIZE_EXPAND_FILL);
	text->connect("text_changed", callable_mp(this, &EditorPropertyText::_text_changed));
	text->connect("text_submitted", callable_mp(this, &EditorPropertyText::_text_submitted));
}
void EditorPropertyMultilineText::_set_read_only(bool p_read_only) {
	text->set_editable(!p_read_only);
	open_big_text->set_disabled(p_read_only);
}
void EditorPropertyMultilineText::_big_text_changed() {
	text->set_text(big_text->get_text());
	emit_changed(get_edited_property(), big_text->get_text(), "", true);
}
void EditorPropertyMultilineText::_text_changed() {
	emit_changed(get_edited_property(), text->get_text(), "", true);
}
void EditorPropertyMultilineText::_open_big_text() {