force everyframe for realtime reflection probe

Other modes not yet supported.

com.unity.render-pipelines.high-definition/HDRP/Editor/Lighting/Reflection/HDReflectionProbeUI.Drawers.cs

         static void Drawer_ModeSettingsRealtime(HDProbeUI s, SerializedHDProbe p, Editor owner)
         {
             SerializedHDReflectionProbe probe = (SerializedHDReflectionProbe)p;
-            EditorGUILayout.PropertyField(p.refreshMode, CoreEditorUtils.GetContent("Refresh Mode|Controls how this probe refreshes in the Player"));
-            EditorGUILayout.PropertyField(probe.timeSlicingMode, CoreEditorUtils.GetContent("Time Slicing|If enabled this probe will update over several frames, to help reduce the impact on the frame rate"));
+            //EditorGUILayout.PropertyField(p.refreshMode, CoreEditorUtils.GetContent("Refresh Mode|Controls how this probe refreshes in the Player"));
+            //EditorGUILayout.PropertyField(probe.timeSlicingMode, CoreEditorUtils.GetContent("Time Slicing|If enabled this probe will update over several frames, to help reduce the impact on the frame rate"));
         }
 
         #endregion

com.unity.render-pipelines.high-definition/HDRP/Editor/Lighting/Reflection/Volume/InfluenceVolumeUI.cs

     partial class InfluenceVolumeUI : BaseUI<SerializedInfluenceVolume>
     {
         const int k_AnimBoolFields = 2;
-
         static readonly int k_ShapeCount = Enum.GetValues(typeof(InfluenceShape)).Length;
 
         public Gizmo6FacesBox boxBaseHandle;

com.unity.render-pipelines.high-definition/HDRP/Lighting/Reflection/HDAdditionalReflectionData.cs

             {
                 base.mode = value;
                 reflectionProbe.mode = value; //ensure compatibility till we capture without the legacy component
+                if(value == ReflectionProbeMode.Realtime)
+                {
+                    refreshMode = ReflectionProbeRefreshMode.EveryFrame;
+                }
             }
         }
 

com.unity.render-pipelines.high-definition/HDRP/Lighting/Reflection/ReflectionSystemInternal.cs

 
             if (additional.mode == ReflectionProbeMode.Realtime)
             {
-                switch (additional.refreshMode)
-                {
-                    case ReflectionProbeRefreshMode.OnAwake:
-                        m_AdditionalDataReflectionProbe_RequestRealtimeRender.Add(additional);
-                        break;
-                    case ReflectionProbeRefreshMode.EveryFrame:
+                //switch (additional.refreshMode)
+                //{
+                //    case ReflectionProbeRefreshMode.OnAwake:
+                //        m_AdditionalDataReflectionProbe_RequestRealtimeRender.Add(additional);
+                //        break;
+                //    case ReflectionProbeRefreshMode.EveryFrame:
-                        break;
-                }
+                //        break;
+                //}
             }
         }