inline parameter enhance with python-experimental fix

[spacether]

inline parameter enhance with python-experimental fix

This is my version of https://github.com/OpenAPITools/openapi-generator/pull/12369/files
where I am working on fixing python-experimental

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[spacether]

This changing results means that unaliasSchema is working differently than ModelUtils.getReferencedSchema for these parameter schemas.
Investigate the details of this.

[spacether]

This is happening because if an enum schema is referenced, the schema with the reference is returned. This assumes that the generator generates a typed reference to that enum model.

[wing328]

Tested python-experimental locally and all tests passed.

petstore_api/model/whale.py                                                           21      0   100%
petstore_api/model/zebra.py                                                           32      5    84%
petstore_api/models/__init__.py                                                      111    111     0%
petstore_api/rest.py                                                                  81     29    64%
petstore_api/schemas.py                                                             1008    105    90%
petstore_api/signing.py                                                              203    165    19%
------------------------------------------------------------------------------------------------------
TOTAL                                                                               8072   1779    78%

=================== 299 passed, 1 warnings in 10.64 seconds ====================
___________________________________ summary ____________________________________
  py39: commands succeeded
  congratulations :)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  49.921 s
[INFO] Finished at: 2022-05-19T10:49:00+08:00
[INFO] ------------------------------------------------------------------------