PadstackInstance has incorrect class hierarchy

[drewm102]

🔍 Before submitting the issue

• I have searched among the existing issues
• I am using a Python virtual environment

🐞 Description of the bug

PadstackInstance should inherit from ConnObj, not Primitive.

📝 Steps to reproduce

Call any of the Primitive methods on a PadstackInstance object. The API will fail.

💻 Which operating system are you using?

Windows

📀 Which ANSYS version are you using?

25.1

🐍 Which Python version are you using?

3.9

📦 Installed packages

ansys-api-edb==1.0.0
ansys-edb-core @ file:///C:/ansys_dev/pyedb/pyedb-core
cachetools==5.3.3
chardet==5.2.0
colorama==0.4.6
coverage==7.4.4
distlib==0.3.8
exceptiongroup==1.2.0
filelock==3.13.3
grpcio==1.62.1
iniconfig==2.0.0
packaging==24.0
platformdirs==4.2.0
pluggy==1.4.0
protobuf==3.20.3
pyproject-api==1.6.1
pytest==7.4.3
pytest-cov==4.1.0
pytest-mock==3.11.1
tomli==2.0.1
tox==4.14.2
virtualenv==20.25.1