Support mod and floorDiv extensions in constant evaluator

Ignore evaluation tests for floorDiv and mod with FIR for now.

compiler/testData/diagnostics/tests/evaluate/customExtensionOverKotlinExtensionInConst.fir.kt

@@ -0,0 +1,7 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE, -UNUSED_PARAMETER
+
+fun Int.mod(other: Int) = 10
+fun Int.floorDiv(other: Int): Int = 20
+
+const val a1 = (-5).mod(2)
+const val b1 = 5.floorDiv(3)

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

@@ -0,0 +1,7 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE, -UNUSED_PARAMETER
+
+fun Int.mod(other: Int) = 10
+fun Int.floorDiv(other: Int): Int = 20
+
+const val a1 = <!CONST_VAL_WITH_NON_CONST_INITIALIZER!>(-5).mod(2)<!>
+const val b1 = <!CONST_VAL_WITH_NON_CONST_INITIALIZER!>5.floorDiv(3)<!>

compiler/testData/diagnostics/tests/evaluate/customExtensionOverKotlinExtensionInConst.txt

@@ -0,0 +1,6 @@
+package
+
+public const val a1: kotlin.Int
+public const val b1: kotlin.Int
+public fun kotlin.Int.floorDiv(/*0*/ other: kotlin.Int): kotlin.Int
+public fun kotlin.Int.mod(/*0*/ other: kotlin.Int): kotlin.Int