test: fix flaky test-process-fatal-execption-tick.js
test-process-fatal-execption-tick.js is sensitive to load. On a loaded machine, it will fail. Move it to sequential so that it does not compete for resources.
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
commit message follows commit guidelines
Affected core subsystem(s)
test