feat: Implement schema filter in the editor

[lornakelly]

Description

Implement the spike's filter in the editor. Logic stays in the editor, not the SDK, until it's settled. Bump the SDK and read workflow.json from src/lib/schema.ts#L26 instead of copying it into editor. Keep the schema filter story from the POC to aid with development

Motivation

The schema stores rules, not fields. To build a form we need a way to get all fields associated with a specific task

Proposed Implementation

Refer to spike: #337

Definition of Done

• Implementation: Fully implemented according to the Open Workflow spec.
• Unit Tests: Comprehensive unit tests are included and passing.
• Integration Tests: Verified within the monorepo and target environments (Web/VS Code).
• Documentation: Updated README.md, ADRs, or official docs.
• Performance: No significant regression in editor responsiveness.
• Accessibility: UI changes comply with accessibility standards.