[HWASan] Run LAM tests with -hwasan-generate-tags-with-calls.

The default callback instrumentation in x86 LAM mode uses ASLR bits
to randomly choose a tag, and thus has a 1/64 chance of choosing a
stack tag of 0, causing stack tests to fail intermittently.  By using
__hwasan_generate_tag to pick tags, we guarantee non-zero tags and
eliminate the test flakiness.

aarch64 doesn't seem to have this problem using thread-local addresses
to pick tags, so perhaps we can remove this workaround once we implement
a similar mechanism for LAM.

Reviewed By: eugenis

Differential Revision: https://reviews.llvm.org/D104470