Merge branch 'STEP_format' into 'master'

STEP_Propagator formatting changes in preparation for further cleanup

See merge request !52443

Tracking/TrkExtrapolation/TrkExSTEP_Propagator/TrkExSTEP_Propagator/STEP_Propagator.h

@@ -165,8 +165,8 @@ public:
   /** AlgTool finalize method */
   virtual StatusCode finalize() override final;
 
-  /** Main propagation method NeutralParameters. Use StraightLinePropagator for
-   * neutrals*/
+  /** Main propagation method NeutralParameters.
+   * It is not implmented for STEP propagator.*/
   virtual std::unique_ptr<Trk::NeutralParameters> propagate(
     const Trk::NeutralParameters&,
     const Trk::Surface&,