Fixed: Opening a searched item and "Find in Page" was not working after rebasing.

* Removed unnecessary code from the project to simplify it and make it more robust.

core/src/main/java/org/kiwix/kiwixmobile/core/main/CoreReaderFragment.kt

@@ -510,6 +510,16 @@ abstract class CoreReaderFragment :
         readAloudService?.registerCallBack(this@CoreReaderFragment)
       }
     }
+    requireActivity().observeNavigationResult<String>(
+      FIND_IN_PAGE_SEARCH_STRING,
+      viewLifecycleOwner,
+      Observer(::storeFindInPageTitle)
+    )
+    requireActivity().observeNavigationResult<SearchItemToOpen>(
+      TAG_FILE_SEARCHED,
+      viewLifecycleOwner,
+      Observer(::storeSearchItem)
+    )
     handleClicks()
   }
 
@@ -2790,6 +2800,7 @@ abstract class CoreReaderFragment :
     onComplete: () -> Unit
   ) {
     try {
+      isFromManageExternalLaunch = true
       currentWebViewIndex = 0
       tabsAdapter?.apply {
         webViewList.removeAt(0)
@@ -2807,28 +2818,6 @@ abstract class CoreReaderFragment :
       Log.w(TAG_KIWIX, "Kiwix shared preferences corrupted", ignore)
       activity.toast(R.string.could_not_restore_tabs, Toast.LENGTH_LONG)
     }
-    // After restoring the tabs, observe any search actions that the user might have triggered.
-    // Since the ZIM file opening functionality has been moved to a background thread,
-    // we ensure that all necessary actions are completed before observing these search actions.
-    observeSearchActions()
-  }
-
-  /**
-   * Observes any search-related actions triggered by the user, such as "Find in Page" or
-   * opening a specific search item.
-   * This method sets up observers for navigation results related to search functionality.
-   */
-  private fun observeSearchActions() {
-    requireActivity().observeNavigationResult<String>(
-      FIND_IN_PAGE_SEARCH_STRING,
-      viewLifecycleOwner,
-      Observer(::storeFindInPageTitle)
-    )
-    requireActivity().observeNavigationResult<SearchItemToOpen>(
-      TAG_FILE_SEARCHED,
-      viewLifecycleOwner,
-      Observer(::storeSearchItem)
-    )
   }
 
   /**