Suppress UNCHECKED_CAST instead of CAST_NEVER_SUCCEEDS in several places

This is related to KT-6611 being fixed recently. Note that not all cases of
incorrect "cast never succeeds" were fixed

compiler/backend/src/org/jetbrains/kotlin/codegen/intrinsics/IntrinsicArrayConstructors.kt

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-@file:Suppress("unused", "UNCHECKED_CAST", "CAST_NEVER_SUCCEEDS")
+@file:Suppress("unused", "UNCHECKED_CAST")
 
 package org.jetbrains.kotlin.codegen.intrinsics