Crash when `activity.type` is undefined

[tinaxd]

Hello,

The bridge sometimes crashes with the following error:

yarn run v1.22.22
$ node ./build/src/discordas.js

/home/matrix-discord-bridge/matrix-appservice-discord/src/presencehandler.ts:122
            const type = activity.type[0] + activity.type.substring(1).toLowerCase(); // STREAMING -> Streaming;
                                      ^
TypeError: Cannot read properties of undefined (reading '0')
    at PresenceHandler.getUserPresence (/home/matrix-discord-bridge/matrix-appservice-discord/src/presencehandler.ts:122:39)
    at PresenceHandler.<anonymous> (/home/matrix-discord-bridge/matrix-appservice-discord/src/presencehandler.ts:98:29)
    at Generator.next (<anonymous>)
    at /home/matrix-discord-bridge/matrix-appservice-discord/build/src/presencehandler.js:23:71
    at new Promise (<anonymous>)
    at __awaiter (/home/matrix-discord-bridge/matrix-appservice-discord/build/src/presencehandler.js:19:12)
    at PresenceHandler.ProcessUser (/home/matrix-discord-bridge/matrix-appservice-discord/build/src/presencehandler.js:91:16)
    at PresenceHandler.<anonymous> (/home/matrix-discord-bridge/matrix-appservice-discord/src/presencehandler.ts:106:43)    at Generator.next (<anonymous>)
    at /home/matrix-discord-bridge/matrix-appservice-discord/build/src/presencehandler.js:23:71
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

When this crash occurs, the bridge crashes immediately after rebooting. However, after some time and several reboots, the crash does not reoccur.

To investigate the cause of this error, I added console.log(presence) to presencehandler.ts:120 and got the following output:

Presence {
  userID: '***',
  ~~~
  activities: [
    Activity {
      name: 'Hang Status',
      type: undefined,
      url: null,
      details: null,
      state: 'chilling',
      applicationID: null,
      timestamps: null,
      party: null,
      assets: null,
      syncID: undefined,
      flags: [ActivityFlags],
      emoji: null,
      createdTimestamp: 1720266148832
    }
  ],
  clientStatus: { desktop: 'online' }
}

It seems that this occurs when someone joins a voice channel with a Hang Status set.

I hope this helps!