Add model back in SoccerTwos example (#5419) (#5420)

Project/Assets/ML-Agents/Examples/Soccer/Prefabs/SoccerFieldTwos.prefab

     VectorActionDescriptions: []
     VectorActionSpaceType: 0
     hasUpgradedBrainParametersWithActionSpec: 1
-  m_Model: {fileID: 5022602860645237092, guid: 8cd4584c2f2cb4c5fb51675d364e10ec, type: 3}
+  m_Model: {fileID: 11400000, guid: 8cd4584c2f2cb4c5fb51675d364e10ec, type: 3}
   m_InferenceDevice: 2
   m_BehaviorType: 0
   m_BehaviorName: SoccerTwos
     VectorActionDescriptions: []
     VectorActionSpaceType: 0
     hasUpgradedBrainParametersWithActionSpec: 1
-  m_Model: {fileID: 5022602860645237092, guid: 8cd4584c2f2cb4c5fb51675d364e10ec, type: 3}
+  m_Model: {fileID: 11400000, guid: 8cd4584c2f2cb4c5fb51675d364e10ec, type: 3}
   m_InferenceDevice: 2
   m_BehaviorType: 0
   m_BehaviorName: SoccerTwos
     VectorActionDescriptions: []
     VectorActionSpaceType: 0
     hasUpgradedBrainParametersWithActionSpec: 1
-  m_Model: {fileID: 5022602860645237092, guid: 8cd4584c2f2cb4c5fb51675d364e10ec, type: 3}
+  m_Model: {fileID: 11400000, guid: 8cd4584c2f2cb4c5fb51675d364e10ec, type: 3}
   m_InferenceDevice: 2
   m_BehaviorType: 0
   m_BehaviorName: SoccerTwos
     VectorActionDescriptions: []
     VectorActionSpaceType: 0
     hasUpgradedBrainParametersWithActionSpec: 1
-  m_Model: {fileID: 5022602860645237092, guid: 8cd4584c2f2cb4c5fb51675d364e10ec, type: 3}
+  m_Model: {fileID: 11400000, guid: 8cd4584c2f2cb4c5fb51675d364e10ec, type: 3}
   m_InferenceDevice: 2
   m_BehaviorType: 0
   m_BehaviorName: SoccerTwos