feat(compass-collection): Separate original LLM response from edited faker schema in Mock Data Generator – CLOUDP-350455

[jcobis]

Description

Refactor Mock Data Generator state to maintain separate copies of the original LLM response and user-edited faker schema. This enables better debugging, as we can compare original LLM output vs user changes.

• Update MockDataGeneratorCompletedState to include originalLlmResponse and editedFakerSchema fields
• Add FakerSchemaEdited Redux action for tracking user modifications
• Update components to use editedFakerSchema for script generation
• Preserve originalLlmResponse as immutable reference