tsan: turn off COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED

All tsan interceptors check for initialization and/or initialize things
as necessary lazily, so we can pretend everything is initialized in the
COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED check to avoid double-checking
for initialization (this is only necessary for sanitizers that don't
handle initialization on common grounds).

Reviewed By: melver

Differential Revision: https://reviews.llvm.org/D112446