Merge remote-tracking branch 'origin/f1-refactor-ue-context' into integration_2025_wk26 (!3488)

Refactor F1 UE context messages, add unit tests

Add encoder+decoder+util functions for F1 UE context messages, and use
them in the stack. The overall goal is to unit test encoder+decoder (to
be sure that what we send is what we receive), and remove any memory
leaks related to F1 handling. Messages that have a unit test:

- F1 UE context setup request/response
- F1 UE context modification request/response
- F1 UE context release request/command/complete

This MR removes almost all remaining memory leaks that are observable in
a "standard" configuration, running SISO in RFsim. In RFsim (without
channel modelling), there are only two memory leaks shown in asan, one
in L1, and one in NGAP.

docker/debug_core_image.sh

@@ -54,7 +54,7 @@ fi
 # the source directory to show correct line numbers
 docker run --rm -it \
   -v $COREDUMP:/tmp/coredump \
-  -v $SOURCES:/opt/$TYPEPATH/src \
+  -v $SOURCES:/oai-ran/ \
   --entrypoint bash \
   $IMAGE \
   -c "gdb --dir=src/cmake_targets/ran_build/build $EXEC /tmp/coredump"