[FIR2IR] Correctly calculate offsets for implicit toLong() calls during constant evaluation

^KT-58132 Fixed

compiler/testData/codegen/box/constants/literalToLongConversion.kt

@@ -0,0 +1,8 @@
+// ISSUE: KT-58132
+
+const val hourInMilliseconds: Long = 60 * 60 * 1000
+
+fun box(): String {
+    val expected = 3600000L
+    return if (hourInMilliseconds == expected) "OK" else "Fail: $hourInMilliseconds"
+}