pack and install: should be able to webpack the library failed

[flaky-bot]

Note: #785 was also for this test, but it was closed more than 10 days ago. So, I didn't mark it flaky.

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commit: fb82aedc7b3aa0ea07a05ace4b20a9ba0673c539
buildURL: Build Status, Sponge
status: failed

[flaky-bot]

commit: 459f0340661bf264acdbd76e038d9024bdebb96f
buildURL: Build Status, Sponge
status: failed

[flaky-bot]

Looks like this issue is flaky. 😟

I'm going to leave this open and stop commenting.

A human should fix and close this.

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When run at the same commit (459f0340661bf264acdbd76e038d9024bdebb96f), this test passed in one build (Build Status, Sponge) and failed in another build (Build Status, Sponge).