Fix an effects bug that missed some control flow instructions #12921

Job	Run time
Windows 2022/Visual C++ 2022 (check)	24m 52s
Windows 2025/Visual C++ 2022 (check)	24m 15s
Windows 11-arm/Visual C++ (btest test-basic test-tool)	17m 36s
Windows 2025/Visual C++ 2022 (test-bundled-gems)	21m 0s
Windows result	2s
	1h 27m 45s

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