Skip test_sendfile_close_peer_in_the_middle_of_receiving on ppc64le

Reported upstream https://github.com/python/cpython/issues/123384
Which was a duplicate of https://github.com/python/cpython/issues/120226

The test is fixed on the main branch, but skipping is easier than backporting.

The failure occurs with Kernel 6.10.x even when Python is built with an older Kernel.

python3.10.spec

@@ -1095,6 +1095,8 @@ CheckPython() {
   # test_distutils
   #   distutils.tests.test_bdist_rpm tests fail when bootstraping the Python
   #   package: rpmbuild requires /usr/bin/pythonX.Y to be installed
+  # test_sendfile_close_peer_in_the_middle_of_receiving:
+  #  https://github.com/python/cpython/issues/120226
   LD_LIBRARY_PATH=$ConfDir $ConfDir/python -m test.regrtest \
     -wW --slowest -j0 --timeout=1800 \
     %if %{with bootstrap}
@@ -1103,6 +1105,9 @@ CheckPython() {
     %ifarch %{mips64}
     -x test_ctypes \
     %endif
+    %ifarch ppc64le
+    -i test_sendfile_close_peer_in_the_middle_of_receiving \
+    %endif
 
   echo FINISHED: CHECKING OF PYTHON FOR CONFIGURATION: $ConfName