Fix: Build error occurs in navigation tutorial and Remove unnecessary button actions (#3668)

* fix: Navigation using ifLet

* fix: Cannot refer to `.addContact`

* fix: delete unused button

* fix: Grammar mistakes

* Not necessary to specify full destination state type.

* wip

---------

Co-authored-by: Brandon Williams <[email protected]>

Author: Ryota-Kurokawa

Sources/ComposableArchitecture/Documentation.docc/Tutorials/MeetTheComposableArchitecture/02-Navigation/02-MultipleDestinations/02-02-02-code-0011.swift

@@ -48,6 +48,8 @@ struct ContactsFeature {
         return .none
       }
     }
-    .ifLet(\.$destination, action: \.destination)
+    .ifLet(\.$destination, action: \.destination) {
+      Destination.body
+    }
   }
 }

Sources/ComposableArchitecture/Documentation.docc/Tutorials/MeetTheComposableArchitecture/02-Navigation/03-TestingPresentation/02-03-01-code-0006-previous.swift

@@ -49,7 +49,7 @@ struct ContactsFeature {
       }
     }
     .ifLet(\.$destination, action: \.destination) {
-      Destination()
+      Destination.body
     }
   }
 }

Sources/ComposableArchitecture/Documentation.docc/Tutorials/MeetTheComposableArchitecture/02-Navigation/03-TestingPresentation/02-03-01-code-0006.swift

@@ -50,7 +50,7 @@ struct ContactsFeature {
       }
     }
     .ifLet(\.$destination, action: \.destination) {
-      Destination()
+      Destination.body
     }
   }
 }

Sources/ComposableArchitecture/Documentation.docc/Tutorials/MeetTheComposableArchitecture/02-Navigation/03-TestingPresentation/02-03-01-code-0007.swift

@@ -50,7 +50,7 @@ struct ContactsFeature {
       }
     }
     .ifLet(\.$destination, action: \.destination) {
-      Destination()
+      Destination.body
     }
   }
 }

Sources/ComposableArchitecture/Documentation.docc/Tutorials/MeetTheComposableArchitecture/02-Navigation/03-TestingPresentation/02-03-03-code-0007-previous.swift

@@ -50,7 +50,7 @@ struct ContactsFeature {
       }
     }
     .ifLet(\.$destination, action: \.destination) {
-      Destination()
+      Destination.body
     }
   }
 }

Sources/ComposableArchitecture/Documentation.docc/Tutorials/MeetTheComposableArchitecture/02-Navigation/03-TestingPresentation/02-03-03-code-0007.swift

@@ -43,7 +43,7 @@ struct ContactsFeature {
       }
     }
     .ifLet(\.$destination, action: \.destination) {
-      Destination()
+      Destination.body
     }
   }
 }

Sources/ComposableArchitecture/Documentation.docc/Tutorials/MeetTheComposableArchitecture/02-Navigation/04-NavigationStacks/02-04-02-code-0000-previous.swift

@@ -45,7 +45,7 @@ struct ContactsFeature {
       }
     }
     .ifLet(\.$destination, action: \.destination) {
-      Destination()
+      Destination.body
     }
   }
 }

Sources/ComposableArchitecture/Documentation.docc/Tutorials/MeetTheComposableArchitecture/02-Navigation/04-NavigationStacks/02-04-02-code-0000.swift

@@ -46,7 +46,7 @@ struct ContactsFeature {
       }
     }
     .ifLet(\.$destination, action: \.destination) {
-      Destination()
+      Destination.body
     }
   }
 }

Sources/ComposableArchitecture/Documentation.docc/Tutorials/MeetTheComposableArchitecture/02-Navigation/04-NavigationStacks/02-04-02-code-0001.swift

@@ -50,7 +50,7 @@ struct ContactsFeature {
       }
     }
     .ifLet(\.$destination, action: \.destination) {
-      Destination()
+      Destination.body
     }
   }
 }

Sources/ComposableArchitecture/Documentation.docc/Tutorials/MeetTheComposableArchitecture/02-Navigation/04-NavigationStacks/02-04-02-code-0002.swift

@@ -50,7 +50,7 @@ struct ContactsFeature {
       }
     }
     .ifLet(\.$destination, action: \.destination) {
-      Destination()
+      Destination.body
     }
     .forEach(\.path, action: \.path) {
       ContactDetailFeature()