3486: Re-introduce separate check method to not need a synthetic accessor (lint error)

app/src/main/java/com/keylesspalace/tusky/EditProfileActivity.kt

@@ -214,17 +214,20 @@ class EditProfileActivity : BaseActivity(), Injectable {
         }
 
         val onBackCallback = object : OnBackPressedCallback(enabled = true) {
-            override fun handleOnBackPressed() {
+            override fun handleOnBackPressed() = checkForUnsavedChanges()
+        }
+
+        onBackPressedDispatcher.addCallback(this, onBackCallback)
+    }
+
+    fun checkForUnsavedChanges() {
         if (viewModel.hasUnsavedChanges(currentProfileData)) {
             showUnsavedChangesDialog()
         } else {
             finish()
         }
     }
-        }
 
-        onBackPressedDispatcher.addCallback(this, onBackCallback)
-    }
 
     override fun onStop() {
         super.onStop()