trigger refresh when operation finishes

Signed-off-by: parneet-guraya <gurayaparneet@gmail.com>

Author: parneet-guraya

app/src/main/java/fr/free/nrw/commons/media/MediaDetailFragment.kt

@@ -140,7 +140,7 @@ class MediaDetailFragment : CommonsDaggerSupportFragment(), CategoryEditHelper.C
     private var index: Int = 0
     private var isDeleted: Boolean = false
     private var isWikipediaButtonDisplayed: Boolean = false
-    private val callback: Callback? = null
+    private var callback: Callback? = null
 
     @Inject
     lateinit var mediaDetailViewModelFactory: MediaDetailViewModel.MediaDetailViewModelProviderFactory
@@ -2072,7 +2072,8 @@ class MediaDetailFragment : CommonsDaggerSupportFragment(), CategoryEditHelper.C
             index: Int,
             editable: Boolean,
             isCategoryImage: Boolean,
-            isWikipediaButtonDisplayed: Boolean
+            isWikipediaButtonDisplayed: Boolean,
+            callback: Callback
         ): MediaDetailFragment {
             val mf = MediaDetailFragment()
             val state = Bundle()
@@ -2083,6 +2084,7 @@ class MediaDetailFragment : CommonsDaggerSupportFragment(), CategoryEditHelper.C
             state.putInt("listTop", 0)
             state.putBoolean("isWikipediaButtonDisplayed", isWikipediaButtonDisplayed)
             mf.arguments = state
+            mf.callback = callback
 
             return mf
         }

app/src/main/java/fr/free/nrw/commons/media/MediaDetailPagerFragment.java

@@ -621,9 +621,9 @@ public Fragment getItem(int i) {
                 binding.mediaDetailsPager.postDelayed(() -> getActivity().invalidateOptionsMenu(), 5);
             }
             if (isFromFeaturedRootFragment) {
-                return MediaDetailFragment.forMedia(position+i, editable, isFeaturedImage, isWikipediaButtonDisplayed);
+                return MediaDetailFragment.forMedia(position+i, editable, isFeaturedImage, isWikipediaButtonDisplayed, MediaDetailPagerFragment.this);
             } else {
-                return MediaDetailFragment.forMedia(i, editable, isFeaturedImage, isWikipediaButtonDisplayed);
+                return MediaDetailFragment.forMedia(i, editable, isFeaturedImage, isWikipediaButtonDisplayed, MediaDetailPagerFragment.this);
             }
         }