SerializeReference instance added through PropertyModifications can cause non-deterministic builds

If you have PropertyModification coming from 2020 version and inserting a SerializeReference instance

• target: {fileID: 4710738598204243869, guid: 4b895725f74b74a8cba03723bdbd90ac, type: 3}

  propertyPath: _Foo.m_LocalVariables.Array.data[1].variable
  value: Unity.Localization UnityEngine.Localization.SmartFormat.PersistentVariables.IntVariable
  objectReference:

  {fileID: 0}

  Then doing a Scene AssetBundle build or Player build containing a scene containing that PropertyModification it will generate new unique ids for those instances.

In 2021.2 and above the new format will be stable for inserting instances as it provides the ManagedReference id:

• target: {fileID: 52625195582723116, guid: d7f55dfe8d2b08a478db87d6a76d1bd0, type: 3}

  propertyPath: managedReferences[4254687138008530948]
  value: Unity.Localization UnityEngine.Localization.SmartFormat.PersistentVariables.IntVariable
  objectReference:

  {fileID: 0}