Revert "[TOFU] Don't send credentials in an unauthenticated TLS tunnel"

This reverts commit fb630e6a13189321d0e83037adc9e7b30dc6d796.

Reason for revert: Regression

Bug ID: 250574778
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:a50b83a25a16749bb22552a6d473c3ca11e9d904)
Merged-In: I2788772c8f2f863f0f2117235483b1dd57ab4ae6
Change-Id: I2788772c8f2f863f0f2117235483b1dd57ab4ae6
8 files changed