[JS IR BE] Implement isPrimitiveArray with pure Ir

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/utils/kotlinTypeBasedUtils.kt

@@ -17,9 +17,6 @@ import org.jetbrains.kotlin.types.typeUtil.isSubtypeOf
 
 // TODO: implement pure Ir-based function (see IrTypeUtils.kt)
 
-@Deprecated("Use pure Ir helper")
-fun IrType.isPrimitiveArray() = KotlinBuiltIns.isPrimitiveArray(toKotlinType())
-
 @Deprecated("Use pure Ir helper")
 fun IrType.getPrimitiveArrayElementType() = KotlinBuiltIns.getPrimitiveArrayElementType(toKotlinType())
 

compiler/ir/backend.common/src/org/jetbrains/kotlin/ir/util/IrTypeUtils.kt

@@ -5,6 +5,7 @@
 
 package org.jetbrains.kotlin.ir.util
 
+import org.jetbrains.kotlin.builtins.KotlinBuiltIns.FQ_NAMES
 import org.jetbrains.kotlin.builtins.UnsignedTypes
 import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.ir.declarations.IrClass
@@ -91,3 +92,4 @@ private inline fun IrType.isTypeFromKotlinPackage(namePredicate: (Name) -> Boole
     } else return false
 }
 
+fun IrType.isPrimitiveArray() = isTypeFromKotlinPackage { it in FQ_NAMES.primitiveArrayTypeShortNames }