Ignore SIGPIPE in codec2 AIDL fuzzer

The service itself typically does this, so the fuzzer should too.
This was causing the fuzzer to exit in android::base::WriteStringToFd.

Test:
/data/fuzz/x86_64/libcodec2-aidl-fuzzer/vendor/libcodec2-aidl-fuzzer
Bug: 300195182

Change-Id: Ib43b02527a35698f90996d3b01a59f11f35d61f4
1 file changed