Add few suppressions in order to silence the IDE (#23248) #347

Job	Run time
Build Kotlin Client JDK17 (samples/client/echo_api/kotlin-jvm-okhttp-multipart-json)	1m 45s
Build Kotlin Client JDK17 (samples/client/echo_api/kotlin-model-prefix-type-mappings)	1m 38s
Build Kotlin Client JDK17 (samples/client/echo_api/kotlin-jvm-okhttp)	1m 53s
Build Kotlin Client JDK17 (samples/client/echo_api/kotlin-jvm-spring-3-restclient)	1m 50s
	7m 6s

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