Link libgssapi.so.9.0 on OpenBSD for AOT libs

[am11]

When building full libs.tests subset, log checker was failing:

root [ /runtime ]# ./build.sh libs.tests --cross --os openbsd --arch x64 --use-bootstrap -c Release -p:ArchiveTests=true
...
  XUnitLogChecker -> /runtime/artifacts/tests/coreclr/openbsd.x64.Release/Common/XUnitLogChecker/XUnitLogChecker/XUnitLogChecker.dll
  Generating native code
ld.lld : error : undefined symbol: krb5_cc_get_lifetime [/runtime/src/tests/Common/XUnitLogChecker/XUnitLogChecker.csproj]
  >>> referenced by acquire_cred.c
  >>>               acquire_cred.o:(__gsskrb5_ccache_lifetime) in archive /crossrootfs/x64/usr/local/heimdal/lib/libgssapi.a
  >>> referenced by acquire_cred.c
  >>>               acquire_cred.o:(acquire_cred_with_password) in archive /crossrootfs/x64/usr/local/heimdal/lib/libgssapi.a
  >>> referenced by acquire_cred.c
  >>>               acquire_cred.o:(acquire_initiator_cred) in archive /crossrootfs/x64/usr/local/heimdal/lib/libgssapi.a
  >>> referenced 4 more times

This is something we are using in libs.native subset, so I just aligned with it. Of course we can't link pure static executable / library with .so reference. The working version for static is:

      <LinkerArg Include="-L&quot;$(SysRoot)/usr/local/heimdal/lib&quot; -L&quot;$(SysRoot)/usr/local/lib&quot; -Wl,--start-group -lgssapi -lheimntlm -lkrb5 -lhx509 -lhcrypto -lasn1 -lwind -lroken -lheimbase -lheimsqlite -lcom_err -Wl,--end-group -lcrypto" Condition="'$(_targetOS)' == 'openbsd'" />

but our current rootfs lacks libcom_err (e2fsprogs package), so lets visit it later once other things are sorted out. For now this works.

Contributes to #124911.

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