refactor(tabs): simplify max-main-tabs function and update usages

src/main/mobile/bottom_tabs.cljs

@@ -273,14 +273,14 @@
   (mobile-tabs/selected-tab-ids
    (storage/get :ls-mobile-tabs)
    {:flashcards? (state/enable-flashcards?)}
-   (mobile-tabs/max-main-tabs (mobile-util/native-iphone?))))
+   (mobile-tabs/max-main-tabs)))
 
 (defn configure
   []
   (let [tabs (->> (mobile-tabs/tab-configs
                    (storage/get :ls-mobile-tabs)
                    {:flashcards? (state/enable-flashcards?)}
-                   (mobile-tabs/max-main-tabs (mobile-util/native-iphone?)))
+                   (mobile-tabs/max-main-tabs))
                   (mapv translated-tab))]
     (configure-tabs
      (cond-> tabs

src/main/mobile/components/settings.cljs

@@ -173,7 +173,7 @@
   (let [[custom-tab-ids set-custom-tab-ids!] (hooks/use-state
                                               (storage/get :ls-mobile-tabs))
         features {:flashcards? (state/enable-flashcards?)}
-        max-tabs (mobile-tabs/max-main-tabs (mobile-util/native-iphone?))
+        max-tabs (mobile-tabs/max-main-tabs)
         selected-tab-ids (mobile-tabs/selected-tab-ids custom-tab-ids features max-tabs)
         selected-tab-id-set (set selected-tab-ids)
         available-tabs (mobile-tabs/available-tabs features)

src/main/mobile/tabs.cljs

@@ -29,8 +29,9 @@
 (def required-tab-id "home")
 
 (defn max-main-tabs
-  [native-iphone?]
-  (if native-iphone? 4 5))
+  "Maximum number of configurable main tabs shown across mobile platforms."
+  []
+  4)
 
 (defn available-tabs
   [{:keys [flashcards?]}]