FIR: Fix incorrect inference errors for <expr>::class

Do not use outer expect type for <expr>

compiler/testData/diagnostics/tests/classLiteral/expressionWithNullableType.fir.kt

@@ -1,16 +0,0 @@
-// FILE: J.java
-
-public interface J {
-    String platformString();
-}
-
-// FILE: test.kt
-
-fun f1(x: Int?): Any = <!EXPRESSION_OF_NULLABLE_TYPE_IN_CLASS_LITERAL_LHS!>x<!>::class
-fun <T> f2(t: T): Any = <!EXPRESSION_OF_NULLABLE_TYPE_IN_CLASS_LITERAL_LHS!>t<!>::class
-fun <T> f21(t: T): Any where T : Any?, T : Comparable<T> = t::class
-fun <S : String?> f3(s: S): Any = <!EXPRESSION_OF_NULLABLE_TYPE_IN_CLASS_LITERAL_LHS!>s<!>::class
-fun <U : Any> f4(u: U?): Any = <!EXPRESSION_OF_NULLABLE_TYPE_IN_CLASS_LITERAL_LHS!>u<!>::class
-fun f5(c: List<*>): Any = <!EXPRESSION_OF_NULLABLE_TYPE_IN_CLASS_LITERAL_LHS, TYPE_MISMATCH!>c[0]<!>::class
-
-fun f6(j: J): Any = j.platformString()::class

compiler/testData/diagnostics/tests/classLiteral/expressionWithNullableType.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: J.java
 
 public interface J {

compiler/testData/diagnostics/tests/declarationChecks/kClassInSignature.fir.kt

@@ -8,8 +8,8 @@ val <T> <!KCLASS_WITH_NULLABLE_TYPE_PARAMETER_IN_SIGNATURE!>test4<!> get() = T::
 
 fun <T> test5() = listOf(T::class)
 
-fun <T> test6(): kotlin.reflect.KClass<<!UPPER_BOUND_VIOLATED!>T<!>> = <!TYPE_MISMATCH!>T<!>::class
-fun <T> test7(): kotlin.reflect.KClass<*> = <!TYPE_MISMATCH!>T<!>::class
+fun <T> test6(): kotlin.reflect.KClass<<!UPPER_BOUND_VIOLATED!>T<!>> = T::class
+fun <T> test7(): kotlin.reflect.KClass<*> = T::class
 fun test8() = <!NULLABLE_TYPE_IN_CLASS_LITERAL_LHS!>String?::class<!>
 
 fun <T> test9() where T : Any?, T : Comparable<T> = T::class