Static property getter emits static int limit() const in C++ (does not compile), and Python ignores IsStatic on properties #180

What's wrong

C++:

• StandardLanguageGenerator.Separated (Coder/Languages/StandardLanguageGenerator.cs:549-556) lowers a property getter with IsReadOnly = true even when IsStatic is set.
• CppGenerator (Coder/Languages/CppGenerator.cs:216-219) then writes const whenever IsReadOnly is set.
• A static member function cannot be cv-qualified.

Python: PythonGenerator (Coder/Languages/PythonGenerator.cs:108-152) never reads declaration.IsStatic for properties, so it always writes an instance @property.

Failure scenario

Input: PropertyDeclaration("Limit", int) { IsStatic = true, HasGetter = true } with getter body return 10, inside class Counter.

• C++: the output is static int limit() const { return 10; }. g++ -std=c++20 fails with "static member function 'static int Counter::limit()' cannot have cv-qualifier".
• Python: the output is @property def Limit(self). Counter.Limit evaluates to the property object, not 10.

Suggested fix

• In Separated, set IsReadOnly = !property.IsStatic. Also guard the C++ const with !funcDecl.IsStatic, which covers a hand-built static, read-only FunctionDeclaration too.
• Python: lower a static property to @staticmethod getter and setter functions, as the C, Rust and Go paths do, or write it as inexpressible.

Acceptance criteria

• The C++ compile tests include a static property with a getter, and it compiles.
• A Python test shows that a static property is reachable from the class.