Fix: Build error occurs in navigation tutorial and Remove unnecessary button actions

[Ryota-Kurokawa]

Please refer to #3667

Fixed two point of tutorial

• Could not build
• Disabled button because using NavigationLink
• incorrect use of ifLet

[iniko83]

Hello!
English is not my native language, so I apologies for possible mistakes.

.buttonStyle(.borderless)
lay in wrong place, here is correct code:

Button {
  store.send(.deleteButtonTapped(id: contact.id))
} label: {
  Image(systemName: "trash")
    .foregroundColor(.red)
}
.buttonStyle(.borderless)

All other things are correct, I've done "meet TCA tutorial" today.

[Ryota-Kurokawa]

Hello! @iniko83

so, I could'n see any mistakes in the areas you pointed out. The answer will change depending on whether it is wrapped in a navigationLink or not. I would appreciate it if you could tell me the exact file for the part you pointed out.
My native is Japanese, so I apologies for possible mistakes too. Your comment was very helpful! Have an good catchup!