### Godot version

4.0b10

### System information

Linux/Manjaro

### Issue description

Most dialogs in the editor scale their text field Controls to fit the whole window when it's resized, but the plugin creation dialog does not: 
![image](https://user-images.githubusercontent.com/24468819/210095286-e53bc450-dcdc-472c-acc7-f8b3532a0ca2.png)


### Steps to reproduce

1. Go to Project Settings -> Plugins -> Create New Plugin
2. Resize the new dialog

### Minimal reproduction project

N/A
grid->add_child(name_edit);
	
	Label *subfolder_lb = memnew(Label);
	subfolder_lb->set_text(TTR("Subfolder:"));
	subfolder_lb->set_horizontal_alignment(HORIZONTAL_ALIGNMENT_RIGHT);
	grid->add_child(subfolder_lb);
	subfolder_validation = memnew(TextureRect);
	subfolder_validation->set_v_size_flags(Control::SIZE_SHRINK_CENTER);
	grid->add_child(subfolder_validation);
	subfolder_edit = memnew(LineEdit);
	subfolder_edit->set_placeholder("\"my_plugin\" -> res://addons/my_plugin");
	subfolder_edit->connect("text_changed", callable_mp(this, &PluginConfigDialog::_on_required_text_changed));
	grid->add_child(subfolder_edit);
	
	Label *desc_lb = memnew(Label);
	desc_lb->set_text(TTR("Description:"));
	desc_lb->set_horizontal_alignment(HORIZONTAL_ALIGNMENT_RIGHT);
	grid->add_child(desc_lb);
	Control *desc_spacer = memnew(Control);
	grid->add_child(desc_spacer);
	desc_edit = memnew(TextEdit);
	desc_edit->set_custom_minimum_size(Size2(400, 80) * EDSCALE);
	desc_edit->set_line_wrapping_mode(TextEdit::LineWrappingMode::LINE_WRAPPING_BOUNDARY);
	grid->add_child(desc_edit);
	
	Label *author_lb = memnew(Label);
	author_lb->set_text(TTR("Author:"));
	author_lb->set_horizontal_alignment(HORIZONTAL_ALIGNMENT_RIGHT);
	grid->add_child(author_lb);
	Control *author_spacer = memnew(Control);