fix: optimize / fix concurrency in UserDal (@fehmer) (#5558)

* fix addResultFilterPreset

* refactor, fix  removeResultFilters

* fix isDiscordIdAvailable, addTag, editTag and removeTag

* fix removeTagPb, updateLbMemory

* incrementBanana

* addTheme, removeTheme, editTheme

* wip

* cleanup incrementBananas

* toMongoFunction

* give up on making toMongoFunction type-safe

* be less stupid, addFavoriteQuote

* removeFavoriteQuote

* cleanup updateInbox

* don't use function if possible

* cleanup

* update error messages

* update error messages again

* review comments

Author: fehmer