Substitute type variables properly in ConeOverloadConflictResolver

#KT-46187 Fixed

compiler/fir/semantics/src/org/jetbrains/kotlin/fir/resolve/calls/TypeVariableTypeRemovingSubstitutor.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.fir.resolve.calls
+
+import org.jetbrains.kotlin.fir.resolve.diagnostics.ConeUnknownLambdaParameterTypeDiagnostic
+import org.jetbrains.kotlin.fir.resolve.substitution.AbstractConeSubstitutor
+import org.jetbrains.kotlin.fir.symbols.ConeTypeParameterLookupTag
+import org.jetbrains.kotlin.fir.types.*
+import org.jetbrains.kotlin.fir.types.impl.ConeTypeParameterTypeImpl
+
+fun ConeKotlinType.removeTypeVariableTypes(typeContext: ConeTypeContext): ConeKotlinType {
+    val substitutor = TypeVariableTypeRemovingSubstitutor(typeContext)
+    return substitutor.substituteOrSelf(this)
+}
+
+private class TypeVariableTypeRemovingSubstitutor(typeContext: ConeTypeContext) : AbstractConeSubstitutor(typeContext) {
+    override fun substituteType(type: ConeKotlinType): ConeKotlinType? = when (type) {
+        is ConeTypeVariableType -> convertTypeVariableType(type)
+        else -> null
+    }
+
+    private fun convertTypeVariableType(type: ConeTypeVariableType): ConeKotlinType {
+        val originalTypeParameter = type.lookupTag.originalTypeParameter
+        if (originalTypeParameter != null) {
+            check(originalTypeParameter is ConeTypeParameterLookupTag)
+            return ConeTypeParameterTypeImpl(originalTypeParameter, type.isNullable, type.attributes)
+        }
+        return ConeErrorType(ConeUnknownLambdaParameterTypeDiagnostic())
+    }
+}