For #2728 & #2729: Uses view model selected tabs for collection creation (#2748)

app/src/main/java/org/mozilla/fenix/browser/BrowserFragment.kt

@@ -666,6 +666,7 @@ class BrowserFragment : Fragment(), BackHandler, CoroutineScope {
             val selectedSet = mutableSetOf(tabs)
             viewModel?.selectedTabs = selectedSet
             viewModel?.saveCollectionStep = SaveCollectionStep.SelectCollection
+            viewModel?.tabCollections = requireComponents.core.tabCollectionStorage.cachedTabCollections.reversed()
             view?.let {
                 val directions = BrowserFragmentDirections.actionBrowserFragmentToCreateCollectionFragment()
                 Navigation.findNavController(it).navigate(directions)

app/src/main/java/org/mozilla/fenix/collections/CreateCollectionFragment.kt

@@ -121,8 +121,9 @@ class CreateCollectionFragment : DialogFragment(), CoroutineScope {
                 is CollectionCreationAction.SaveCollectionName -> {
                     showSavedSnackbar(it.tabs.size)
                     dismiss()
+
                     context?.let { context ->
-                        val sessionBundle = it.tabs.toSessionBundle(context)
+                        val sessionBundle = viewModel.selectedTabs.toList().toSessionBundle(context)
                         launch(Dispatchers.IO) {
                             requireComponents.core.tabCollectionStorage.createCollection(it.name, sessionBundle)
                         }