Issue #3522130: Add client-side transform for daterange_default widget

Summary

Fixes https://www.drupal.org/project/canvas/issues/3522130 by adding client-side transform support for the daterange_default widget path.

What changed

• Add daterange_default mapping in ReduxIntegratedFieldWidgetsHooks::fieldWidgetInfoAlter().
• Add dateRange transform in ui/src/utils/transforms.ts.
• Register transform library in ShapeMatchingHooks.
• Add/update coverage in:
  • tests/src/Kernel/EcosystemSupport/FieldWidgetSupportTest.php
  • tests/src/Kernel/HookCanvasStorablePropAlterTest.php
  • ui/tests/vitest/unit/transforms.test.js
  • ui/tests/e2e/prop-types.cy.js
• Harden Cypress date-range test by waiting for each autosave PATCH after each blur.
• Update docs in docs/redux-integrated-field-widgets.md.

Local verification

1. ddev phpcs src/Hook/ReduxIntegratedFieldWidgetsHooks.php src/Hook/ShapeMatchingHooks.php tests/src/Kernel/EcosystemSupport/FieldWidgetSupportTest.php tests/src/Kernel/HookCanvasStorablePropAlterTest.php (pass)
2. ddev phpunit tests/src/Kernel/EcosystemSupport/FieldWidgetSupportTest.php tests/src/Kernel/HookCanvasStorablePropAlterTest.php (pass)
3. ddev exec 'npm run lint:eslint -- ui/src/utils/transforms.ts ui/tests/vitest/unit/transforms.test.js ui/tests/e2e/prop-types.cy.js' (pass)
4. ddev exec 'cd ui && npm run test -- tests/vitest/unit/transforms.test.js' (pass)
5. ddev exec 'npm run type-check --workspace=@drupal-canvas/ui' (pass)

Notes

• Current schema requires both from and to; partial ranges currently resolve to null.
• Related context: #3523379 and #3546401.