[FIR2IR] Properly approximate intersection types during fir2ir conversion

^KT-62544 Fixed

compiler/resolution.common/src/org/jetbrains/kotlin/types/TypeApproximatorConfiguration.kt

@@ -133,4 +133,11 @@ open class TypeApproximatorConfiguration {
         override val allFlexible: Boolean get() = true
         override val intersection: IntersectionStrategy = IntersectionStrategy.TO_UPPER_BOUND_IF_SUPERTYPE
     }
+
+    object FrontendToBackendTypesApproximation : AllFlexibleSameValue() {
+        override val allFlexible: Boolean get() = true
+        override val errorType: Boolean get() = true
+        override val integerLiteralConstantType: Boolean get() = true
+        override val intersectionTypesInContravariantPositions: Boolean get() = true
+    }
 }