Make optimized loop over unsigned array, indices, withIndex JVM-specific

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/JvmBackendContext.kt

@@ -215,6 +215,9 @@ class JvmBackendContext(
     override val preferJavaLikeCounterLoop: Boolean
         get() = true
 
+    override val optimizeLoopsOverUnsignedArrays: Boolean
+        get() = true
+
     override val doWhileCounterLoopOrigin: IrStatementOrigin
         get() = JvmLoweredStatementOrigin.DO_WHILE_COUNTER_LOOP