Recent commits for internal constructor and destructor names resulted
in destructors declared with template parameters being ignored
with warnings like:
Illegal destructor name TemplPublicBase6< int >::~TemplPublicBase6(). Ignored.
Although declaring constructors and destructors with template parameters
are rejected by modern compilers and C++20, SWIG continues to support it.
Make sure the name stored in the parse tree is the C++20 compliant name
name, that is, without the template parameters.
Fixes using declarations for templated constructors declared with
template parameters, was warning with:
Nothing known about 'TemplPublicBase6< int >::TemplPublicBase6'.