feat(cc-widgets): outdial widget e2e tests

[eigengravy]

COMPLETES CAI-7682

This pull request addresses

Adding end-to-end Playwright tests for the outdial call workflow across all three agent login modes (Desktop, Extension, and Dial Number).

by making the following changes

< DESCRIBE YOUR CHANGES >

• Added playwright/tests/outdial-call-test.spec.ts — new E2E test suite with three describe blocks covering the full outdial lifecycle (enter number, dial, connect, verify call controls, end call, wrapup) for:
  • Desktop mode — auto-connect first leg, no manual accept
  • Extension mode — first leg rings on Webex Calling extension, agent must answer before customer is dialed
  • Dial Number mode — auto-connect like Desktop
  • Updated playwright/test-manager.ts — added a DIAL_NUMBER login-mode branch to TestManager.setup() so outdial tests can provision an agent logged in via dial number
  • Updated playwright/suites/station-login-user-state-tests.spec.ts — wired the new createOutdialCallTests into the existing suite entrypoint
  • Updated OutdialCall/ARCHITECTURE.md — documented the post-dial flow by login mode with Mermaid sequence diagrams explaining auto-connect (Desktop/DN) vs manual-answer (Extension) behavior
  • Updated playwright/ai-docs/ — minor updates to AGENTS.md and ARCHITECTURE.md to reflect the new outdial test coverage

The following scenarios were tested

• yarn test:e2e --project=SET_3 --grep "Outdial"

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• This PR is related to
  • Feature
  • Defect fix
  • Tech Debt
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