Keep token during url redirection

[philippotto]

Fixes that links with sharing tokens did not work, anymore, since redirecting to the explorational-less route did lose these tokens.

URL of deployed dev instance (used for testing):

• https://___.webknossos.xyz

Steps to test:

• I opened a link like this locally: http://localhost:9000/annotations/Explorational/62aa1cd21a0200d818ab0ac2?token=zSysRSA6cPrv1205dBnoZA#2584,3584,1024,0,1.3
• and ensured that it redirected to http://localhost:9000/annotations/62aa1cd21a0200d818ab0ac2?token=zSysRSA6cPrv1205dBnoZA#2584,3584,1024,0,1.3

Issues:

• fixes a regression from Provide clean annotation uri, no more Explorational vs Task #6208

---

(Please delete unneeded items, merge only when none are left open)

• Updated (unreleased) changelog
• Updated (unreleased) migration guide if applicable
• Updated documentation if applicable
• Adapted wk-connect if datastore API changes
• Adapted wk-libs python client if relevant API parts change
• Needs datastore update after deployment
• Ready for review

[fm3]

LGTM