[K2] Allow using simple boolean expressions in constant position

Such behavior is not the same as in K1, but it is more consistent.

#KT-64400 Fixed

compiler/testData/diagnostics/tests/modifiers/const/compare.fir.kt

@@ -0,0 +1,22 @@
+const val INT = 0
+const val LONG = 0L
+
+const val compareInt1 = 1 < 2
+const val compareInt2 = 1 <= 3
+const val compareInt3 = 1 > 4
+const val compareInt4 = 1 >= 5
+
+const val compareInt5 = INT < 2
+const val compareInt6 = INT <= 3
+const val compareInt7 = INT > 4
+const val compareInt8 = INT >= 5
+
+const val compareLong1 = 1L < 2L
+const val compareLong2 = 1L <= 3L
+const val compareLong3 = 1L > 4L
+const val compareLong4 = 1L >= 5L
+
+const val compareLong5 = LONG < 2L
+const val compareLong6 = LONG <= 3L
+const val compareLong7 = LONG > 4L
+const val compareLong8 = LONG >= 5L