c77f09230b Fix descriptor_tests not checking ToString output of public descriptors (Russell Yanofsky)
Pull request description:
This fixes a minor test bug introduced in #13697 that I noticed while reviewing #14646
Tree-SHA512: efed91200cdff5f86ba5de3461ac00759d285e2905f6cb24cea15d3e23e0581ce5fc14b24a40db093f7ebd662ee1ee2cf67f8798bac1903a78298eda08909cfb
This is a backport of Core PR14820