Function validate_workflow_process 

pub fn validate_workflow_process(
    workflow: &WorkflowProcessDefinition,
    prefix: &str,
    result: &mut ValidationResult,
)

Validates a WorkflowProcessDefinition (sub-workflow reference) Matches Go SDK’s validation tags:

• namespace: validate:“required,hostname_rfc1123”
• name: validate:“required,hostname_rfc1123”
• version: validate:“required,semver_pattern”