refactor: closed groups delete for yourself and handle unsend request if it's from yourself or author now

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/DeleteOptionsBottomSheet.kt

@@ -4,6 +4,7 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import androidx.core.view.isVisible
 import com.google.android.material.bottomsheet.BottomSheetDialogFragment
 import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.android.synthetic.main.fragment_delete_message_bottom_sheet.*
@@ -57,6 +58,7 @@ class DeleteOptionsBottomSheet : BottomSheetDialogFragment(), View.OnClickListen
             deleteForEveryoneTextView.text =
                 resources.getString(R.string.delete_message_for_me_and_recipient, contact)
         }
+        deleteForEveryoneTextView.isVisible = !recipient.isClosedGroupRecipient
         deleteForMeTextView.setOnClickListener(this)
         deleteForEveryoneTextView.setOnClickListener(this)
         cancelTextView.setOnClickListener(this)

libsession/src/main/java/org/session/libsession/messaging/sending_receiving/ReceivedMessageHandler.kt

@@ -144,7 +144,8 @@ private fun handleConfigurationMessage(message: ConfigurationMessage) {
 }
 
 fun MessageReceiver.handleUnsendRequest(message: UnsendRequest) {
-    if (message.sender != message.author) { return }
+    val userPublicKey = MessagingModuleConfiguration.shared.storage.getUserPublicKey()
+    if (message.sender != message.author && (message.sender != userPublicKey && userPublicKey != null)) { return }
     val context = MessagingModuleConfiguration.shared.context
     val storage = MessagingModuleConfiguration.shared.storage
     val messageDataProvider = MessagingModuleConfiguration.shared.messageDataProvider