Apply IndexDB workaround for Waterfox

[charlag]

There are a lot of reports about Waterfox and InvalidStateError for IDBTransaction (same as #779 #708 #917 ). We enabled workaround for PaleMoon and we should add detection for Waterfox and also apply the fix there.

[charlag]

Actually also happens in Firefox 64:

IDB could not get data os:GroupMetaData key:KyaFWpf-1s-0: InvalidStateError, An attempt was made to use an object that is not, or is no longer, usable> value/<@https://mail.tutanota.com/worker.js:1:421006
a@https://mail.tutanota.com/libs.js:26:73163
[22]value@https://mail.tutanota.com/worker.js:1:420950
value@https://mail.tutanota.com/worker.js:1:292629
value/a@https://mail.tutanota.com/libs.js:26:73163
[22][22][22][22]h@https://mail.tutanota.com/libs.js:26:1644
p@https://mail.tutanota.com/libs.js:26:1585
[2]a/this.drainQueues@https://mail.tutanota.com/libs.js:26:1325

The function is _updateGroupData. Not sure if they changed something again, need to investigate.

[charlag]

Could actually be changed UserAgent because it is reported by the Waterfox user.

[charlag]

In my tests it was disabling indexing right away.
It is an old fix so assume tested.