The build doesn't pass in the Navigation tutorial

[Ryota-Kurokawa]

Description

Fix parts that do not build when following the Tutorial guide or parts that seem unnecessary

Checklist

• I have determined whether this bug is also reproducible in a vanilla SwiftUI project.
• If possible, I've reproduced the issue using the main branch of this package.
• This issue hasn't been addressed in an existing GitHub issue or discussion.

Expected behavior

No response

Actual behavior

No response

Reproducing project

No response

The Composable Architecture version information

No response

Destination operating system

No response

Xcode version information

No response

Swift Compiler version information

[mbrandonw]

I believe your PR fixed these issues, so closing this now. Thanks again!