Add tests for enum names with dots in python cilents #432

Job	Run time
Test Python client (3.9, samples/openapi3/client/petstore/python)	49s
Test Python client (3.10, samples/openapi3/client/petstore/python-aiohttp)	49s
Test Python client (3.10, samples/openapi3/client/petstore/python)	50s
Test Python client (3.12, samples/openapi3/client/petstore/python)	54s
Test Python client (3.9, samples/openapi3/client/petstore/python-aiohttp)	53s
Test Python client (3.12, samples/openapi3/client/petstore/python-aiohttp)	47s
Test Python client (3.11, samples/openapi3/client/petstore/python)	43s
Test Python client (3.11, samples/openapi3/client/petstore/python-aiohttp)	47s
Test Python client (3.13, samples/openapi3/client/petstore/python-aiohttp)	46s
Test Python client (3.13, samples/openapi3/client/petstore/python)	45s
Test Python client (3.11, samples/openapi3/client/petstore/python)	48s
Test Python client (3.10, samples/openapi3/client/petstore/python)	54s
Test Python client (3.9, samples/openapi3/client/petstore/python)	47s
Test Python client (3.13, samples/openapi3/client/petstore/python)	51s
Test Python client (3.12, samples/openapi3/client/petstore/python)	54s
Test Python client (3.11, samples/openapi3/client/petstore/python-aiohttp)	47s
Test Python client (3.10, samples/openapi3/client/petstore/python-aiohttp)	49s
Test Python client (3.9, samples/openapi3/client/petstore/python-aiohttp)	53s
Test Python client (3.13, samples/openapi3/client/petstore/python-aiohttp)	46s
Test Python client (3.12, samples/openapi3/client/petstore/python-aiohttp)	47s
	16m 19s

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