feat(base)!: Disable streamer for FairRootManager

Almost all member variables have been excluded already which suggests
`FairRootManager` objects were not intended for serialization.

Author: dennisklein

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to FairRoot will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
+## x.x.0 - xxxx-xx-xx
+
+### Breaking Changes
+
+* No streamer is generated for `FairRootManager` any more
+
 ## 19.0.0 - 2024-05-17
 
 ### Breaking Changes

fairroot/base/LinkDef.h

@@ -35,7 +35,7 @@
 #pragma link C++ class FairParticle+;
 #pragma link C++ class FairPrimaryGenerator+;
 #pragma link C++ class FairRecoEventHeader+;
-#pragma link C++ class FairRootManager+;
+#pragma link C++ class FairRootManager;
 #pragma link C++ class FairRun+;
 #pragma link C++ class FairRunAna;
 #pragma link C++ class FairRunIdGenerator;

fairroot/base/steer/FairRootManager.h

@@ -406,7 +406,7 @@ class FairRootManager : public TObject
     // data members
     Int_t fId{0};   //! This manager ID
 
-    ClassDefOverride(FairRootManager, 14);
+    ClassDefOverride(FairRootManager, 0);
 };
 
 // FIXME: move to source since we can make it non-template dependent