rollup: suppress known warnings from external deps (#4068)
rollup: suppress known warnings from external deps (#4068)

Summary:
Rollup complains about circular dependencies and uses of `eval` in our
third-party dependencies. In most cases, we’re not able to work around
these; sometimes, they’re explicitly wontfix upstream. The warnings
aren’t useful, they create spam, and they prevent other, potentially
useful warnings from appearing.

Test Plan:
Building `//tensorboard` no longer prints any warnings, and the built
content of `tensorboard/webapp/tb_webapp_binary.js` is identical before
and after this change.

wchargin-branch: rollup-suppress-3p-warnings

tensorflow/tensorboard,tensorflow/tensorboard,tensorflow/tensorboard,tensorflow/tensorboard,tensorflow/tensorboard,tensorflow/tensorboard,tensorflow/tensorboard