Build: suppress warnings in kotlin-gradle-plugin

There's a lot of warnings which are distracting during each build.

 #KT-60498 Fixed

libraries/tools/kotlin-gradle-plugin/build.gradle.kts

@@ -32,6 +32,7 @@ kotlin {
                 "org.jetbrains.kotlin.compiler.plugin.ExperimentalCompilerApi",
             )
         )
+        suppressWarnings = true
     }
 }