Fix bogus integer overflow warning for 'mod' operator

#KT-15875 Fixed

compiler/testData/diagnostics/tests/operatorRem/noOperatorRemFeature.kt

@@ -21,4 +21,8 @@ class Baz {
 fun local() {
     <!UNSUPPORTED_FEATURE!>operator<!> fun Int.rem(x: Int) {}
     <!UNSUPPORTED_FEATURE!>operator<!> fun String.remAssign(x: Int) {}
+}
+
+fun noOverflow() {
+    (-1).<!DEPRECATION!>mod<!>(5)
 }

compiler/testData/diagnostics/tests/operatorRem/noOperatorRemFeature.txt

@@ -1,6 +1,7 @@
 package
 
 public fun local(): kotlin.Unit
+public fun noOverflow(): kotlin.Unit
 public operator fun Baz.rem(/*0*/ x: kotlin.Int): kotlin.Unit
 
 public final class Bar {