[PyROOT] Add back initializer list pythonization to CPyCppyy

The patch that disables the initializer list pythonization should in
principle not be necessary.

bindings/pyroot/cppyy/CPyCppyy/src/Pythonize.cxx

@@ -1721,7 +1721,6 @@ bool CPyCppyy::Pythonize(PyObject* pyclass, const std::string& name)
 #endif
 
     // This pythonization is disabled for ROOT because it is a bit buggy
-#if 0
     if (Cppyy::IsAggregate(((CPPClass*)pyclass)->fCppType) && name.compare(0, 5, "std::", 5) != 0) {
     // create a pseudo-constructor to allow initializer-style object creation
         Cppyy::TCppType_t kls = ((CPPClass*)pyclass)->fCppType;
@@ -1789,7 +1788,6 @@ bool CPyCppyy::Pythonize(PyObject* pyclass, const std::string& name)
             }
         }
     }
-#endif
 
 
 //- class name based pythonization -------------------------------------------

bindings/pyroot/cppyy/sync-upstream

@@ -41,7 +41,6 @@ mv cppyy_CMakeLists.txt cppyy/CMakeLists.txt
 
 # Apply patches (they were created with git format-patch -1 HEAD)
 # Alternatively, one can also use "git am" to create individual commits
-git apply patches/CPyCppyy-Disable-initializer-style-construction.patch
 git apply patches/CPyCppyy-Adapt-to-no-std-in-ROOT.patch
 git apply patches/CPyCppyy-Always-convert-returned-std-string.patch
 git apply patches/CPyCppyy-Disable-implicit-conversion-to-smart-ptr.patch