The u0_25prb multi-QoS CI scenario needs PCF (use_local_pcc_rules: no),
but in f02c84fc that configuration has been placed in the shared
5g_rfsimulator/mini_nonrf_config.yaml. Every other rfsim pipeline
mounts that file without running oai-pcf.

In some setups different from Linux (i.e. WSL2) this causes issues.

With `use_local_pcc_rules: no`, SMF attempts associating to oai-pcf when
creating SM Context even when no PCF container exists. If that HTTP call
exceeds the wait timeout (100 ms), AMF gets error and does not complete
the SM context creation, a later Update SM Context then fails
("Could not find Nsmf_PDUSession URI").

Native Linux is usually fine: when the failed PCF association is fast
enough, context creation completes successfully.

This commit moves PCF-specific configuration into 5g_rfsimulator_u0_25prb
only. The shared config is restored to `use_local_pcc_rules: yes` and a single
oai DNN (pre-f02c84fc status).

Changes:
- Add new file 5g_rfsimulator_u0_25prb/mini_nonrf_config.yaml (PCF, dual-DNN,
  use_local_pcc_rules: no) and mount in 5g_rfsimulator_u0_25prb/docker-compose.yaml
- Revert 5g_rfsimulator/mini_nonrf_config.yaml
Signed-off-by: Guido Casati <guido.casati@openairinterface.org>
Reported-by: Thomas Schlichter <thomas.schlichter@iis.fraunhofer.de>