Fix settings page dismissing immediately by replacing multiple isPresented navigation destinations with value-based NavigationPath

The settings view was being popped immediately after push because multiple
navigationDestination(isPresented:) modifiers on the same view caused SwiftUI
to reset bindings when appState published changes. Replaced with a single
navigationDestination(for: SidebarDestination.self) using an explicit
NavigationStack(path:). Also fixed @ObservedObject -> @StateObject on
SettingsView.ViewModel, added AllRecipesListView/AllRecipesCategoryCardView,
and added translations for new strings.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Nextcloud Cookbook iOS Client/Localizable.xcstrings

@@ -583,6 +583,28 @@
         }
       }
     },
+    "All Recipes" : {
+      "localizations" : {
+        "de" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Alle Rezepte"
+          }
+        },
+        "es" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Todas las recetas"
+          }
+        },
+        "fr" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Toutes les recettes"
+          }
+        }
+      }
+    },
     "An HTML parsing and web scraping library for Swift. Used for importing schema.org recipes from websites." : {
       "localizations" : {
         "de" : {
@@ -2577,6 +2599,28 @@
         }
       }
     },
+    "No recipes found" : {
+      "localizations" : {
+        "de" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Keine Rezepte gefunden"
+          }
+        },
+        "es" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "No se encontraron recetas"
+          }
+        },
+        "fr" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Aucune recette trouvée"
+          }
+        }
+      }
+    },
     "No results found" : {
       "comment" : "A message indicating that no recipes were found for the current search query.",
       "isCommentAutoGenerated" : true,