refactor(card-browser): remove fragment reference

Only used in tests

Issue 17901

Author: david-allison

AnkiDroid/src/main/java/com/ichi2/anki/CardBrowser.kt

@@ -170,9 +170,6 @@ open class CardBrowser :
 
     lateinit var viewModel: CardBrowserViewModel
 
-    val cardBrowserFragment: CardBrowserFragment
-        get() = supportFragmentManager.findFragmentById(R.id.card_browser_frame) as CardBrowserFragment
-
     /**
      * The frame containing the NoteEditor. Non null only in layout x-large.
      */

AnkiDroid/src/test/java/com/ichi2/anki/CardBrowserTest.kt

@@ -57,6 +57,7 @@ import com.ichi2.anki.browser.CardBrowserColumn.DECK
 import com.ichi2.anki.browser.CardBrowserColumn.QUESTION
 import com.ichi2.anki.browser.CardBrowserColumn.SFLD
 import com.ichi2.anki.browser.CardBrowserColumn.TAGS
+import com.ichi2.anki.browser.CardBrowserFragment
 import com.ichi2.anki.browser.CardBrowserViewModel
 import com.ichi2.anki.browser.CardBrowserViewModelTest
 import com.ichi2.anki.browser.CardOrNoteId
@@ -1742,3 +1743,6 @@ fun CardBrowser.searchCards(search: String? = null) {
     }
     runBlocking { viewModel.searchJob?.join() }
 }
+
+val CardBrowser.cardBrowserFragment: CardBrowserFragment
+    get() = supportFragmentManager.findFragmentById(R.id.card_browser_frame) as CardBrowserFragment