Add suppressed_screens configuration support to IDV SDK

[Copilot]

Enables Relying Parties to customize IDV flows by specifying which screens to omit via the suppressed_screens parameter in sdk_config.

Changes

• SdkConfig: Added optional suppressed_screens parameter (list of screen identifiers), property accessor, and JSON serialization
• SdkConfigBuilder: Added with_suppressed_screens() builder method
• Tests: Added coverage for list values, empty lists, None defaults, and JSON serialization

Usage

sdk_config = (
    SdkConfigBuilder()
    .with_allows_camera_and_upload()
    .with_suppressed_screens(["consent_screen", "document_selection"])
    .with_success_url("https://example.com/success")
    .build()
)

The parameter is optional and defaults to None when not specified, maintaining backward compatibility.

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