n64: handle correct R/W to RDP spans in test mode PR run #561

Job	Run time
Build ares (primary) / ares-windows-clang-cl-arm64	10m 59s
Build ares (primary) / ares-windows-x64	9m 38s
Build ares (primary) / ares-macos-universal	24m 19s
Build ares (auxiliary) / ares-windows-x64-gcc	20m 42s
Build ares (auxiliary) / ares-windows-clang-cl-x64	8m 46s
Build ares (auxiliary) / ares-windows-arm64	7m 44s
Build ares (auxiliary) / ares-windows-msvc-x64	7m 48s
Build ares (auxiliary) / ares-windows-msvc-arm64	8m 48s
Build ares (auxiliary) / ares-ubuntu-gcc-arm64	11m 30s
Build ares (auxiliary) / ares-ubuntu-gcc-x64	16m 1s
Build ares (auxiliary) / ares-ubuntu-clang-arm64	12m 32s
Build ares (auxiliary) / ares-ubuntu-clang-x64	18m 59s
Build ares (auxiliary) / ares-ubuntu-gcc-arm64-qt	12m 29s
Build ares (auxiliary) / ares-freebsd	23m 58s
	3h 14m 13s

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