gh-159497: Skip test_read1_error_does_not_cause_reentrant_failure under ASan

[lazerg]

The test asks for a sys.maxsize // 2 + 1 byte buffer to force a MemoryError. Under AddressSanitizer that size is over the allocator limit, so ASan aborts the process instead of returning NULL, unless allocator_may_return_null=1 is set. The test was already skipped under TSan for the same reason, so this skips it under ASan too, whatever ASAN_OPTIONS says, like the TSan skip.

• Issue: Running test test_read1_error_does_not_cause_reentrant_failure triggers ASan allocation error in test_bufferedio #159497