build: fail on instrumentation errors

nyc was silently failing to instrument new language features, resulting in a failure to instrument console.js.

the actual underlying issues are discussed and addressed here:

https://github.com/babel/babel/issues/8075, https://github.com/istanbuljs/istanbuljs/pull/174, https://github.com/istanbuljs/istanbuljs/pull/175

In this pull request we enable nyc's logging and new "exit on failure" feature to ensure that we catch behavior like this immediately in the future.

see #20952 (closed)

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• commit message follows commit guidelines

CC: @BridgeAR, @maclover7