fixes(spring) Fixes @Nullable annotation #1156

Job	Run time
Build with JDK17 (samples/client/petstore/spring-http-interface)	46s
Build with JDK17 (samples/client/petstore/spring-http-interface-useHttpServiceProxyFactoryInterfa...	1m 6s
Build with JDK17 (samples/server/petstore/java-helidon-server/v3/mp/)	1m 11s
Build with JDK17 (samples/openapi3/client/petstore/spring-cloud-3)	1m 1s
Build with JDK17 (samples/openapi3/server/petstore/springboot-3)	59s
Build with JDK17 (samples/client/petstore/spring-http-interface-noResponseEntity)	59s
Build with JDK17 (samples/client/petstore/spring-http-interface-reactive-noResponseEntity)	51s
Build with JDK17 (samples/client/petstore/java-helidon-client/v3/mp/)	1m 3s
Build with JDK17 (samples/client/petstore/java/microprofile-rest-client-outer-enum)	53s
Build with JDK17 (samples/server/petstore/java-helidon-server/v3/se)	42s
Build with JDK17 (samples/server/petstore/springboot-x-implements-skip)	1m 0s
Build with JDK17 (samples/client/petstore/java-helidon-client/v3/se)	56s
Build with JDK17 (samples/server/petstore/java-camel/)	1m 8s
Build with JDK17 (samples/openapi3/server/petstore/springboot-3-include-http-request-context)	1m 7s
Build with JDK17 (samples/client/petstore/java/webclient-jakarta)	44s
Build with JDK17 (samples/client/petstore/spring-http-interface-reactive)	47s
	15m 13s

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