Search form sometimes sends wrong parameters after cycling between datasources

[sal-uva]

E.g. between Telegram and Reddit.

[stijn-uva]

This is an issue with the Telegram datasource specifically, which loads some javascript to facilitate its use of security codes, which overrides the 'submit' event listener:

https://github.com/digitalmethodsinitiative/4cat/blob/ad0a65ad52bd826d8c3d789a51442572f8bec8a6/datasources/telegram/webtool/tool.js#L4