refactor: replace the share title chooser for the invite to be the invite button title

app/src/main/java/org/thoughtcrime/securesms/loki/activities/SettingsActivity.kt

@@ -283,7 +283,7 @@ class SettingsActivity : PassphraseRequiredActionBarActivity() {
         val invitation = "Hey, I've been using Session to chat with complete privacy and security. Come join me! Download it at https://getsession.org/. My Session ID is $hexEncodedPublicKey!"
         intent.putExtra(Intent.EXTRA_TEXT, invitation)
         intent.type = "text/plain"
-        val chooser = Intent.createChooser(intent, getString(R.string.share))
+        val chooser = Intent.createChooser(intent, getString(R.string.activity_settings_invite_button_title))
         startActivity(chooser)
     }