* fix(api-v2): rethrow unexpected errors as InternalServerErrorException in deleteSelectedCalendar * fix(selected-calendars): rethrow unexpected errors in deleteSelectedCalendar method * fix(selected-calendars): improve error handling in deleteSelectedCalendar method * fix lint and error handlers Refactor error handling in deleteSelectedCalendar method. --------- Co-authored-by: Bandhan Majumder <133476557+bandhan-majumder@users.noreply.github.com>