test_runner: support custom message for expectFailure #3231

Job	Run time
Build slim tarball	1m 27s
aarch64-darwin: with shared libraries	8m 31s
x86_64-darwin: with shared libraries	8m 29s
aarch64-linux: with shared libraries	8m 19s
x86_64-linux: with shared libraries	8m 22s
	35m 8s

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