K2: Fix processing inference lower bound NullableType <: T & Any

This commit is a follow-up to 0d070f8ba9.
Here we remove accidentally returning "Not a sub-type" for a constraint
like TypeVariable <: DNN type

#KT-59241 Fixed

compiler/testData/diagnostics/tests/platformTypes/notNullTypeParameter/supplier.fir.kt

@@ -1,23 +0,0 @@
-// FULL_JDK
-
-// FILE: JavaClass.java
-import java.util.function.Supplier;
-import org.jetbrains.annotations.NotNull;
-
-public class JavaClass {
-    public static <E> void consume(@NotNull E value) {}
-    public static <E> void compute(Supplier<@NotNull E> computable) {}
-}
-
-// FILE: KotlinMain.kt
-fun test1() {
-    JavaClass.compute { <!ARGUMENT_TYPE_MISMATCH!>42.apply {}<!> }
-}
-
-fun test2() {
-    JavaClass.compute { <!ARGUMENT_TYPE_MISMATCH!>if (true) 42 else 42<!> }
-}
-
-fun test3() {
-    42.<!INAPPLICABLE_CANDIDATE!>apply<!>(JavaClass::<!UNRESOLVED_REFERENCE!>consume<!>)
-}

compiler/testData/diagnostics/tests/platformTypes/notNullTypeParameter/supplier.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FULL_JDK
 
 // FILE: JavaClass.java