fix(boringssl): fix incorrect build profile for osx intel cross compile

[zekronium]

Motivation:

boringssl-static profile mac-intel-cross-compile incorrectly sets arch resulting in osx-osx-x86_64 build classifier.
It also wrongfully sets the native lib name to libnetty_tcnative_osx_osx_64, making netty-handler unable to find it

If the intention of this profile was to build cross platform (from linux to mac), then os.detected.name can be overridden to still produce the similar result.

<os.detected.name>osx</os.detected.name>

Modifications:
Adjust arch to x86_64 in maven profile for boringssl static

Result:
./mvn -Pmac-intel-cross-compile -am -pl boringssl-static clean package builds correctly on an apple silicon system

[normanmaurer]

@zekronium thanks a lot !