### Godot version

v4.0.beta15.official [4fa6edc88]

### System information

Windows 10 (10.0.19045 Build 19045) | Forward+ | Vulkan API 1.3.206 | AMD Radeon RX 6800 XT

### Issue description

If there is a function with arguments within a `.gdshaderinc` file, then this function can not be used in other shaders that include this via a relative include. The error in the other shaders is "Too many arguments for "example()" call. Expected at most 0 but received 1". Using an absolute path for the include resolves the error.

**Note:** The relative include *does* work in the special case of both files being in the project root.

### Steps to reproduce

1. Put a shader and a shader-include file into a subdirectory
2. Write a function with arguments in the shader-include file
3. Include that file in the shader
4. Try to use the function

### Minimal reproduction project

[shader-include-bug.zip](https://github.com/godotengine/godot/files/10508745/shader-include-bug.zip)

Ref<InputEventMouseButton> mb = ev;
	if (mb.is_valid()) {
		if (mb->get_button_index() == MouseButton::RIGHT && mb->is_pressed()) {
			CodeEdit *tx = shader_editor->get_text_editor();
			Point2i pos = tx->get_line_column_at_pos(mb->get_global_position() - tx->get_global_position());
			int row = pos.y;
			int col = pos.x;
			tx->set_move_caret_on_right_click_enabled(EDITOR_GET("text_editor/behavior/navigation/move_caret_on_right_click"));
			if (tx->is_move_caret_on_right_click_enabled()) {
				tx->remove_secondary_carets();
				if (tx->has_selection()) {
					int from_line = tx->get_selection_from_line();
					int to_line = tx->get_selection_to_line();
					int from_column = tx->get_selection_from_column();
					int to_column = tx->get_selection_to_column();
					if (row < from_line || row > to_line || (row == from_line && col < from_column) || (row == to_line && col > to_column)) {
						
						tx->deselect();
					}
				}
				if (!tx->has_selection()) {
					tx->set_caret_line(row, true, false);
					tx->set_caret_column(col);
				}
			}
			_make_context_menu(tx->has_selection(), get_local_mouse_position());
		}
	}