test(e2e): refactoring e2e test for tc_003_dashboard_settings_account option

added refactoring of e2e test for TC_003_Dashboard_Settings_Account option as page object model wasnot implemented completely and properly; all locators were in spec file and necessary functions were missing as well as page objects, hence enchancing code maintainability and reusabilty.

relates to https://git.opentalk.dev/opentalk/qa/reports/-/issues/89