[FIR] Introduce containsMultipleNonSubsumed to intersection overrides

After this change the IO created for
`SimpleColoredComponent::setToolTipText`
will be `containsMultipleNonSubsumed == true`
while IOs created for classes in
`intersectionOverridesIntersection.kt`
will have this property set to `false`.

^KT-65972 Fixed

compiler/testData/diagnostics/tests/intersectionWithMultipleDefaultsInJavaOverriddenByIntersectionInKotlin.fir.kt

@@ -1,35 +0,0 @@
-// FILE: ColoredTextContainer.java
-public interface ColoredTextContainer {
-    default void setToolTipText(String text) {}
-}
-
-// FILE: JComponent.java
-public abstract class JComponent {
-    public void setToolTipText(String text) {}
-}
-
-// FILE: SimpleColoredComponent.java
-// IDEALLY:
-//     Provides `IO SimpleColoredComponent::setToolTipText`, because inherits
-//     `JComponent::setToolTipText` and `ColoredTextContainer::setToolTipText`,
-//     which don't sumbsume one another, but Java allows picking the class-based one in this case.
-// REALITY:
-//     Contains an IO for the above. We check if this is green Java via a
-//     modified check that accounts for this case.
-public class SimpleColoredComponent extends JComponent implements ColoredTextContainer {}
-
-// FILE: Main.kt
-
-// Not important, left for the record
-interface TextFragment : ColoredTextContainer
-
-// IDEALLY:
-//     Provides `JComponent::setToolTipText`, because inherits
-//     `ColoredTextContainer::setToolTipText` and `IO SimpleColoredComponent::setToolTipText`,
-//     and the latter subsumes the former.
-// REALITY:
-//     Contains IO between `ColoredTextContainer::setToolTipText` and `IO SimpleColoredComponent::setToolTipText`.
-//     In this case `IO SimpleColoredComponent::setToolTipText` should not be unwrapped, otherwise
-//     we miss `nonSubsumed()` check and since this is a Kotlin class we are not allowed to implicitly choose
-//     between `JComponent::setToolTipText` and `ColoredTextContainer::setToolTipText`.
-private <!CANNOT_INFER_VISIBILITY!>class TextFragmentImpl<!> : TextFragment, SimpleColoredComponent()

compiler/testData/diagnostics/tests/intersectionWithMultipleDefaultsInJavaOverriddenByIntersectionInKotlin.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: ColoredTextContainer.java
 public interface ColoredTextContainer {
     default void setToolTipText(String text) {}