[fenix] For https://github.com/mozilla-mobile/fenix/issues/9252: Update views visibility ony when list has finished loading

app/src/main/java/org/mozilla/fenix/settings/logins/SavedLoginsFragment.kt

@@ -65,6 +65,7 @@ class SavedLoginsFragment : Fragment() {
         savedLoginsStore = StoreProvider.get(this) {
             SavedLoginsFragmentStore(
                 SavedLoginsFragmentState(
+                    isLoading = true,
                     items = listOf(),
                     filteredItems = listOf()
                 )

app/src/main/java/org/mozilla/fenix/settings/logins/SavedLoginsFragmentStore.kt

@@ -48,6 +48,7 @@ sealed class SavedLoginsFragmentAction : Action {
  * @property items Filtered (or not) list of logins to display
  */
 data class SavedLoginsFragmentState(
+    val isLoading: Boolean = false,
     val items: List<SavedLoginsItem>,
     val filteredItems: List<SavedLoginsItem>
 ) : State
@@ -61,14 +62,19 @@ private fun savedLoginsStateReducer(
 ): SavedLoginsFragmentState {
     return when (action) {
         is SavedLoginsFragmentAction.UpdateLogins -> state.copy(
+            isLoading = false,
             items = action.list,
             filteredItems = action.list
         )
         is SavedLoginsFragmentAction.FilterLogins -> {
             if (action.newText.isNullOrBlank()) {
-                state.copy(filteredItems = state.items)
+                state.copy(
+                    isLoading = false,
+                    filteredItems = state.items)
             } else {
-                state.copy(filteredItems = state.items.filter { it.url.contains(action.newText) })
+                state.copy(
+                    isLoading = false,
+                    filteredItems = state.items.filter { it.url.contains(action.newText) })
             }
         }
     }

app/src/main/java/org/mozilla/fenix/settings/logins/SavedLoginsView.kt

@@ -69,8 +69,10 @@ class SavedLoginsView(
     }
 
     fun update(state: SavedLoginsFragmentState) {
-        view.saved_logins_list.isVisible = state.items.isNotEmpty()
+        if (!state.isLoading) {
-        view.saved_passwords_empty_view.isVisible = state.items.isEmpty()
+            view.saved_logins_list.isVisible = state.items.isNotEmpty()
+            view.saved_passwords_empty_view.isVisible = state.items.isEmpty()
+        }
         loginsAdapter.submitList(state.filteredItems)
     }
 }