Close stale unified bytecode lowering gates

[rogeralsing]

Summary

• lower VM-owned property set/update ops and SwapTopTwo through the general expression loop
• align resumable eligibility with the opcodes ExecuteResumable already implements
• add drift audits for general expression lowering gaps and resumable opcode allow-list coverage

Verification

• rtk dotnet test tests/Asynkron.JsEngine.Tests -c Release --filter 'FullyQualifiedNameExpressionProgramCoverageMapTests|FullyQualifiedNameUnifiedBytecodeProductionEligibilityTests.EvaluateResumable_ShortCircuitReturnExpression_AcceptsImplementedVmOpcodes'
• rtk dotnet test tests/Asynkron.JsEngine.Tests -c Release --filter 'FullyQualifiedNameUnifiedBytecodeProductionEligibilityTests|FullyQualifiedNameExpressionProgramCoverageMapTests'
• rtk dotnet test tests/Asynkron.JsEngine.Tests -c Release --filter 'FullyQualifiedName~UnifiedBytecodeProductionInvocationTests'
• rtk dotnet build src/Asynkron.JsEngine/Asynkron.JsEngine.csproj -c Release
• rtk git diff --check
• rtk rg 'EvaluateExpression(|ProfileEvaluateExpression(' src/Asynkron.JsEngine/Ast/TypedAstEvaluator.ExecutionPlanRunner*
• rtk ./tools/profile forloop --memory

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