test_runner: avoid hanging on incomplete v8 frames #5339

Job	Run time
Build slim tarball	1m 58s
aarch64-darwin: with shared libraries	20m 50s
x86_64-linux: with shared libraries	21m 31s
aarch64-linux: with shared libraries	18m 31s
x86_64-darwin: with shared libraries	41m 20s
	1h 44m 10s

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