Ford: handle metric cruise speed (v2) (#31463)

* Ford: handle metric cruise speed (v2)

**Description**

I found a signal which appears to match the IPC "Show km/h" setting.
Requires https://github.com/commaai/opendbc/pull/1010.

**Verification**

- [ ] Test in car and confirm that toggling the "Show km/h" setting does
  not result in the cruise speed shown in openpilot being incorrect.
- [ ] Test in a non-English (metric) car.

* not present on Q4

* fix freq

* test

* Revert "test"

This reverts commit 5e3a9f6df126d51685157de1e52bd6695db40fac.

* Update ref_commit

---------

Co-authored-by: Shane Smiskol <shane@smiskol.com>
old-commit-hash: b59ae50961

selfdrive/car/ford/carstate.py

@@ -57,7 +57,8 @@ class CarState(CarStateBase):
       ret.steerFaultTemporary |= cp.vl["Lane_Assist_Data3_FD1"]["LatCtlSte_D_Stat"] not in (1, 2, 3)
 
     # cruise state
-    ret.cruiseState.speed = cp.vl["EngBrakeData"]["Veh_V_DsplyCcSet"] * CV.MPH_TO_MS
+    is_metric = cp.vl["INSTRUMENT_PANEL"]["METRIC_UNITS"] == 1 if not self.CP.flags & FordFlags.CANFD else False
+    ret.cruiseState.speed = cp.vl["EngBrakeData"]["Veh_V_DsplyCcSet"] * (CV.KPH_TO_MS if is_metric else CV.MPH_TO_MS)
     ret.cruiseState.enabled = cp.vl["EngBrakeData"]["CcStat_D_Actl"] in (4, 5)
     ret.cruiseState.available = cp.vl["EngBrakeData"]["CcStat_D_Actl"] in (3, 4, 5)
     ret.cruiseState.nonAdaptive = cp.vl["Cluster_Info1_FD1"]["AccEnbl_B_RqDrv"] == 0
@@ -131,6 +132,10 @@ class CarState(CarStateBase):
       messages += [
         ("Lane_Assist_Data3_FD1", 33),
       ]
+    else:
+      messages += [
+        ("INSTRUMENT_PANEL", 1),
+      ]
 
     if CP.transmissionType == TransmissionType.automatic:
       messages += [

selfdrive/test/process_replay/ref_commit

@@ -1 +1 @@
-4e5e37be9d70450154f8b100ed88151bb3612331
+f77699bfd783ab0c9a419f2af883b36aed20cc68