[Gradle, JS] Change byArgument on byArgumentOrNull

#KT-38485 fixed

libraries/tools/kotlin-gradle-plugin-api/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinJsCompilerType.kt

@@ -13,7 +13,7 @@ enum class KotlinJsCompilerType {
     companion object {
         const val jsCompilerProperty = "kotlin.js.compiler"
 
-        fun byArgument(argument: String): KotlinJsCompilerType? =
+        fun byArgumentOrNull(argument: String): KotlinJsCompilerType? =
             values().firstOrNull { it.name.equals(argument, ignoreCase = true) }
     }
 }