Extract ConeTypeSubstitutorByTypeConstructor

compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/substitution/Substitutors.kt

@@ -223,7 +223,14 @@ fun createTypeSubstitutorByTypeConstructor(
     approximateIntegerLiterals: Boolean
 ): ConeSubstitutor {
     if (map.isEmpty()) return ConeSubstitutor.Empty
-    return object : AbstractConeSubstitutor(context), TypeSubstitutorMarker {
+    return ConeTypeSubstitutorByTypeConstructor(map, context, approximateIntegerLiterals)
+}
+
+internal class ConeTypeSubstitutorByTypeConstructor(
+    private val map: Map<TypeConstructorMarker, ConeKotlinType>,
+    private val context: ConeTypeContext,
+    private val approximateIntegerLiterals: Boolean
+) : AbstractConeSubstitutor(context), TypeSubstitutorMarker {
     override fun substituteType(type: ConeKotlinType): ConeKotlinType? {
         if (type !is ConeLookupTagBasedType && type !is ConeStubType) return null
         val new = map[type.typeConstructor(context)] ?: return null
@@ -231,18 +238,6 @@ fun createTypeSubstitutorByTypeConstructor(
         return approximatedIntegerLiteralType.updateNullabilityIfNeeded(type)?.withCombinedAttributesFrom(type)
     }
 }
-}
-
-internal class TypeSubstitutorByTypeConstructor(
-    private val map: Map<TypeConstructorMarker, ConeKotlinType>,
-    context: ConeTypeContext
-) : AbstractConeSubstitutor(context), TypeSubstitutorMarker {
-    override fun substituteType(type: ConeKotlinType): ConeKotlinType? {
-        if (type !is ConeLookupTagBasedType && type !is ConeStubType) return null
-        val new = map[type.typeConstructor(typeContext)] ?: return null
-        return new.approximateIntegerLiteralType().updateNullabilityIfNeeded(type)?.withCombinedAttributesFrom(type)
-    }
-}
 
 // Note: builder inference uses TypeSubstitutorByTypeConstructor for not fixed type substitution
 class NotFixedTypeToVariableSubstitutorForDelegateInference(