fix(browse): Unsubscribe before restarting pager

app/src/main/java/eu/kanade/tachiyomi/ui/source/browse/BrowseSourceController.kt

@@ -752,6 +752,11 @@ open class BrowseSourceController(bundle: Bundle) :
         binding.progress.isVisible = false
     }
 
+    fun unsubscribe() {
+        watchJob?.cancel()
+        watchJob = null
+    }
+
     /**
      * Workaround to fix data state de-sync issues when controller detached,
      * and attaching flow directly into Item caused some flickering issues.

app/src/main/java/eu/kanade/tachiyomi/ui/source/browse/BrowseSourcePresenter.kt

@@ -171,6 +171,8 @@ open class BrowseSourcePresenter(
         val sourceListType = preferences.libraryLayout()
         val outlineCovers = uiPreferences.outlineOnCovers()
 
+        view?.unsubscribe()
+
         // Prepare the pager.
         pagerJob?.cancel()
         pagerJob = presenterScope.launchIO {