fix(beforeAll): fix issue 190 when parent before_all throws

[BrainCrumbz]

Purposes of this current PR are, in general: to fail an example when one of the hooks throws unexpectedly, and to avoid executing an example body when one of the beforeAll/before hooks throws. More in detail:

1. Fail example when one of beforeAll/before/act/after/afterAll throws
2. Don't execute before/act/example/after when current/ancestor beforeAll throws
3. Don't execute act/example when current/ancestor before throws
4. Keep executing example when current/ancestor act throws

All that, holding for async versions as well.

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Initial description

This PR tracks work-in-progress of fixing issue #190 , as well as other possible problems happening when a context-/method-level before or beforeEach or beforeAll throws and subsequent examples should not run and result as failures.

[GiuseppePiscopo]

@amirrajan it seems like changes are needed also w.r.t. before current implementation. At the moment, when a parent or same-context before fails, example body is run anyway. If instead we keep consistent with recent requirement changes in beforeAll, that should not run instead.

Should we just make needed changes in this same PR?

EDIT: Also, probably the same thing should then happen for act.

[amirrajan]

👍