unix: use extended PGO training set

This will run all tests by default.

Author: indygreg

cpython-unix/build-cpython.sh

@@ -575,7 +575,7 @@ if [ -n "${PYTHON_MEETS_MINIMUM_VERSION_3_14}"  ]; then
 fi
 
 # Define the base PGO profiling task, which we'll extend below with ignores
-export PROFILE_TASK='-m test --pgo'
+export PROFILE_TASK='-m test --pgo-extended'
 
 # On 3.14+ `test_strftime_y2k` fails when cross-compiling for `x86_64_v2` and `x86_64_v3` targets on
 # Linux, so we ignore it. See https://github.com/python/cpython/issues/128104