test(e2e): refactoring of e2e tests regarding accessibility and functions returning page objects

Ghost Userrequested to merge
(removed):refactoring into main

some refactoring of https://git.opentalk.dev/opentalk/qa/reports/-/issues/261 to improve code style and minor changes in TC_002_Dashboard_Settings_Profile option to fix failing CI, plus addressing feedbacks on !2014 (merged), in particular refactoring more page object functions that return another page object

Edited by Ghost User

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