rust: Pass ASAN/HWASAN flags alongside fuzzers

'-Z sanitizer={hw}address' was not being passed if the fuzzer sanitizer
property was also set. Additionally, trying to use the fuzzer sanitizer
with the address sanitizer incorrectly linked in the hwasan runtime.

Bug: 293466009
Test: SANITIZE_TARGET="fuzzer address" m android_logger_fuzzer
Test: SANITIZE_TARGET="fuzzer hwaddress" m android_logger_fuzzer
Test: ldd <fuzzer_on_device> # ensure correct libraries linked
Test: Check build flags
Change-Id: I6b01c8808af07c642217b642af128ebf934f4bc6