On-the-fly call-graph builder uses incorrect signature for Class::forName method.

[michael-emmi]

Describe the bug

On-the-fly call-graph builder uses incorrect signature JavaMethods.SIG_INIT for signature of Class::forName method.

Input file

N/A

To reproduce

N/A

Expected behavior

Value should be JavaMethods.SIG_FOR_NAME.

Stacktrace

N/A

Additional context

#1879 introduced the bug here.