[fenix] For https://github.com/mozilla-mobile/fenix/issues/21776 - Replace 'isEmpty' with 'ifEmpty'

app/src/main/java/org/mozilla/fenix/library/bookmarks/BookmarkFragment.kt

@@ -156,9 +156,7 @@ class BookmarkFragment : LibraryPageFragment<BookmarkNode>(), UserInteractionHan
         // Reload bookmarks when returning to this fragment in case they have been edited
         val args by navArgs<BookmarkFragmentArgs>()
         val currentGuid = bookmarkStore.state.tree?.guid
-            ?: if (args.currentRoot.isNotEmpty()) {
-                args.currentRoot
-            } else {
+            ?: args.currentRoot.ifEmpty {
                 BookmarkRoot.Mobile.id
             }
         loadInitialBookmarkFolder(currentGuid)

app/src/main/java/org/mozilla/fenix/library/recentlyclosed/RecentlyClosedItemViewHolder.kt

@@ -33,7 +33,7 @@ class RecentlyClosedItemViewHolder(
 
     fun bind(item: RecoverableTab) {
         binding.historyLayout.titleView.text =
-            if (item.title.isNotEmpty()) item.title else item.url
+            item.title.ifEmpty { item.url }
         binding.historyLayout.urlView.text = item.url
 
         binding.historyLayout.setSelectionInteractor(

app/src/main/java/org/mozilla/fenix/search/toolbar/ToolbarView.kt

@@ -135,9 +135,7 @@ class ToolbarView(
             if (searchState.pastedText.isNullOrEmpty()) {
                 // If we're in edit mode, setting the search term will update the toolbar,
                 // so we make sure we have the correct term/query to show.
-                val termOrQuery = if (searchState.searchTerms.isNotEmpty()) {
-                    searchState.searchTerms
-                } else {
+                val termOrQuery = searchState.searchTerms.ifEmpty {
                     searchState.query
                 }
                 view.setSearchTerms(termOrQuery)

app/src/main/java/org/mozilla/fenix/tabstray/browser/AbstractBrowserTabViewHolder.kt

@@ -124,9 +124,7 @@ abstract class AbstractBrowserTabViewHolder(
     }
 
     private fun updateTitle(tab: TabSessionState) {
-        val title = if (tab.content.title.isNotEmpty()) {
-            tab.content.title
-        } else {
+        val title = tab.content.title.ifEmpty {
             tab.content.url
         }
         titleView.text = title