[Java][jaxrs-spec] Fix `JsonTypeName` Generation With `allOf` and `on… #775

Job	Run time
Build JAX-RS (samples/server/petstore/jaxrs-spec)	36s
Build JAX-RS (samples/server/petstore/jaxrs-cxf-non-spring-app)	1m 6s
Build JAX-RS (samples/server/petstore/jaxrs-spec-withxml)	50s
Build JAX-RS (samples/server/petstore/jaxrs-cxf)	50s
Build JAX-RS (samples/server/petstore/jaxrs-spec-interface)	33s
Build JAX-RS (samples/server/petstore/jaxrs-resteasy/eap)	37s
Build JAX-RS (samples/server/petstore/jaxrs-spec-swagger-v3-annotations-jakarta)	46s
Build JAX-RS (samples/server/petstore/jaxrs-datelib-j8)	48s
Build JAX-RS (samples/server/petstore/jaxrs-cxf-annotated-base-path)	54s
Build JAX-RS (samples/server/petstore/jaxrs-spec-interface-response)	32s
Build JAX-RS (samples/server/petstore/jaxrs-resteasy/joda)	1m 12s
Build JAX-RS (samples/server/petstore/jaxrs-resteasy/eap-joda)	42s
Build JAX-RS (samples/server/petstore/jaxrs/jersey2)	43s
Build JAX-RS (samples/server/petstore/jaxrs-resteasy/default)	40s
Build JAX-RS (samples/server/petstore/jaxrs-spec-microprofile-openapi-annotations)	41s
Build JAX-RS (samples/server/petstore/jaxrs-spec-swagger-v3-annotations)	37s
Build JAX-RS (samples/server/petstore/jaxrs-jersey)	1m 1s
Build JAX-RS (samples/server/petstore/jaxrs-resteasy/eap-java8)	1m 3s
Build JAX-RS (samples/server/petstore/jaxrs/jersey2-useTags)	44s
Build JAX-RS (samples/server/petstore/jaxrs-cxf-cdi)	46s
Build JAX-RS (samples/server/petstore/jaxrs-spec-swagger-annotations)	35s
	16m 16s

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