test: add E2E tests for routing form attribute conditions (calcom#27681)

* feat: add comprehensive E2E tests for routing form attribute conditions

Co-Authored-By: joe@cal.com <j.auyeung419@gmail.com>

* refactor: assert routedTeamMemberIds in URL instead of email in results

Co-Authored-By: joe@cal.com <j.auyeung419@gmail.com>

* refactor: assert both routedTeamMemberIds in URL and email in results

Co-Authored-By: joe@cal.com <j.auyeung419@gmail.com>

* fix: include users without attribute assignments in exclusion condition evaluation

Users with no attribute assigned were excluded from the team members list
entirely, causing exclusion operators (not_equals, not_some_in, not_like,
not_between, etc.) to never match them. Now getAttributesAssignmentData
includes all team members, even those without attribute assignments.

Also adds unit tests and E2E tests for this scenario.

Co-Authored-By: joe@cal.com <j.auyeung419@gmail.com>

* fix: update getAttributes test to reflect new behavior for empty attributes

Users without attribute assignments are now included with empty attributes
so exclusion operators can match them. Updated test expectation accordingly.

Co-Authored-By: joe@cal.com <j.auyeung419@gmail.com>

* refactor: remove redundant usersWithAssignments code (fix already in _prepareAssignmentData from main)

Co-Authored-By: joe@cal.com <j.auyeung419@gmail.com>

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Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

Author: joeauyeung