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)

core/descriptors/src/org/jetbrains/kotlin/renderer/DescriptorRendererImpl.kt

@@ -26,7 +26,6 @@ import org.jetbrains.kotlin.types.*
 import org.jetbrains.kotlin.types.ErrorUtils.UninferredParameterTypeConstructor
 import org.jetbrains.kotlin.types.TypeUtils.CANT_INFER_FUNCTION_PARAM_TYPE
 import org.jetbrains.kotlin.util.capitalizeDecapitalize.toLowerCaseAsciiOnly
-import java.util.*
 
 internal class DescriptorRendererImpl(
     val options: DescriptorRendererOptionsImpl
@@ -263,7 +262,7 @@ internal class DescriptorRendererImpl(
         }
 
         if (type.isDefinitelyNotNullType) {
-            append("!!")
+            append(" & Any")
         }
     }
 

core/descriptors/src/org/jetbrains/kotlin/types/SpecialTypes.kt

@@ -174,7 +174,7 @@ class DefinitelyNotNullType private constructor(
     override fun makeNullableAsSpecified(newNullability: Boolean): SimpleType =
         if (newNullability) delegate.makeNullableAsSpecified(newNullability) else this
 
-    override fun toString(): String = "$delegate!!"
+    override fun toString(): String = "$delegate & Any"
 
     @TypeRefinement
     override fun replaceDelegate(delegate: SimpleType) = DefinitelyNotNullType(delegate, useCorrectedNullabilityForTypeParameters)