Use obj flag to differentiate RTypedData and RData #699

Job	Run time
Windows 11-arm/Visual C++ (btest test-basic test-tool)	15m 56s
Windows 2025/Visual C++ 2022 (test-bundled-gems)	35m 10s
Windows 2025/Visual C++ 2022 (check)	13m 0s
Windows 2022/Visual C++ 2022 (check)	12m 14s
Windows result	3s
	1h 16m 23s

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