Reintroduce network checks where required

shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/repository/RepositoryImpl.kt

@@ -378,7 +378,7 @@ class Repository(private val api: SelfossApi, private val apiDetails: ApiDetails
         }
     }
 
-    private fun isNetworkAvailable() = isConnectionAvailable.value && !offlineOverride
+    fun isNetworkAvailable() = isConnectionAvailable.value && !offlineOverride
 
     // TODO: Handle offline actions
 }