Do not apply constant folding for non built-in functions

#KT-15872 Fixed

compiler/testData/diagnostics/tests/evaluate/infixFunOverBuiltinMemberInConst.kt

@@ -0,0 +1,10 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE, -UNUSED_PARAMETER
+
+infix fun Int.rem(other: Int) = 10
+infix operator fun Int.minus(other: Int): Int = 20
+
+const val a1 = <!CONST_VAL_WITH_NON_CONST_INITIALIZER!>(-5) rem 2<!>
+const val a2 = (-5).rem(2)
+
+const val b1 = <!CONST_VAL_WITH_NON_CONST_INITIALIZER!>5 minus 3<!>
+const val b2 = 5.minus(3)