Project Organization feature cypress tests with improvements/bug fixes

[gingerknight]

Summary

• Add 18 new smoke tests for the Project Organization feature (12 → 30 total)
• Standardize all test selectors from mixed data-cy/data-testid to data-testid only
• Replace all hardcoded cy.wait() calls in helper files with deterministic API intercepts and DOM assertions
• Fix e2e login flow to handle both single-page and two-step Cognito auth
• Fix e2e test failures in bedrock-model-workflow and chat specs (7 failing → 0 failing)

Changes

• ~55% faster E2e suite runtime
• ~9% faster on shared smoke specs

New Project Smoke Tests

• project.shared.spec.ts: 18 tests covering view toggle, CRUD, session assignment/removal
• projectHelpers.ts: Helper functions for project creation, rename, delete, and view switching
• Smoke fixtures for project and session API stubs with stateful mock data
• smoke/support/commands.ts: Added project and session API stubs with in-memory state

Test Selector Standardization

• Added data-testid attributes to 6 React components (Chat, ChatPromptInput, RagOptions, BaseModelConfig, Sessions, ProjectsSection)
• Updated all Cypress helper selectors to use data-testid with fallback to old selectors
• Migrated all 10 data-cy → data-testid in React components and Cypress tests

Hardcoded Wait Removal

• Replaced 9 cy.wait(ms) calls across 6 helper files with:
  • API intercepts (cy.intercept + cy.wait('@alias')) for delete operations
  • DOM assertions (aria-pressed, element visibility, content checks) for UI state changes

Tests

• All 30 smoke tests passing in CI
• No regressions on existing smoke tests
• E2e test run against deployed environment

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