[NI] Correctly compute definitely not null type for intersection one

{ T : Any? & Foo & Bar? }!! -> { T!! & Foo & Bar }

 Also, fix bug with loosing non-representative number type.
 For example, for type { Byte & SomeType } we lost type `Byte` because
 `getDefaultPrimitiveNumberType` returns null for it

 Fixes #KT-28334 for NI

compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestGenerated.java

@@ -8420,6 +8420,11 @@ public class DiagnosticsTestGenerated extends AbstractDiagnosticsTest {
                     runTest("compiler/testData/diagnostics/tests/generics/nullability/functionalBound.kt");
                 }
 
+                @TestMetadata("inferNotNullTypeFromIntersectionOfNullableTypes.kt")
+                public void testInferNotNullTypeFromIntersectionOfNullableTypes() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/generics/nullability/inferNotNullTypeFromIntersectionOfNullableTypes.kt");
+                }
+
                 @TestMetadata("nullToGeneric.kt")
                 public void testNullToGeneric() throws Exception {
                     runTest("compiler/testData/diagnostics/tests/generics/nullability/nullToGeneric.kt");