Backport #8035 into 3.14.x

[jtattermusch]

Backport #8035 to 3.14.x

[google-cla]

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[jtattermusch]

CC @JamesNK @chrisdunelm

[jtattermusch]

@acozzette this is a release blocker.

[acozzette]

The CLA is OK because this PR is just cherry-picking commits that already went through the CLA process.