Fix stub generation false reporting
A number of false function signatures were being detected by the DocStringParser. This PR fixes them that issue. The main problem I was getting was because my doc strings would have both the python and c++ signature, and the stub generator would grab parts from the c++ signature.
According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅
According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅
According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅
According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅
According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅