* refactor: migrate collapsed_reply_threads to ts
- migrate collapsed_reply_threads e2e tests to typescript
- update matterpollPlugin plugin constant so that it matches
with apiUploadAndEnablePlugin argument
Fixes: #21296
* refactor: use PostMessageResp on channel_notifications_spec
- use type PostMessageResp
- convert cy.wrap to regular for loop
* refactor: update types on collapsed_reply_threads
- add missing types to variables
- update types on current variables
- remove unnecessary commands on following_spec.ts
* fix: solve issue with non callable function
- move wait call to next line
* refactor: remove functions from global scope
- keep functions as helper functions
- fix lint issue
