Change rendering for definitely non-nullable types from T!! to T & Any

^KT-26245 In Progress

compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/TypeRenderer.kt

@@ -13,7 +13,7 @@ fun ConeKotlinType.render(): String {
     val nullabilitySuffix = if (this !is ConeFlexibleType && this !is ConeClassErrorType) nullability.suffix else ""
     return when (this) {
         is ConeTypeVariableType -> "${renderAttributes()}TypeVariable(${this.lookupTag.name})"
-        is ConeDefinitelyNotNullType -> "${original.render()}!!"
+        is ConeDefinitelyNotNullType -> "${original.render()} & Any"
         is ConeClassErrorType -> "${renderAttributes()}ERROR CLASS: ${diagnostic.reason}"
         is ConeCapturedType -> "${renderAttributes()}CapturedType(${constructor.projection.render()})"
         is ConeClassLikeType -> {

compiler/fir/dump/src/org/jetbrains/kotlin/fir/dump/HtmlFirDump.kt

@@ -853,7 +853,7 @@ class HtmlFirDump internal constructor(private var linkResolver: FirLinkResolver
             is ConeCapturedType -> inlineUnsupported(type)
             is ConeDefinitelyNotNullType -> resolved {
                 generate(type.original)
-                +"!!"
+                +" & Any"
             }
             is ConeIntersectionType -> resolved { generate(type) }
             is ConeIntegerLiteralType -> inlineUnsupported(type)