Enable DefinitelyNotNullTypeParameters since 1.7

^KT-26245 In Progress

compiler/testData/integration/ant/jvm/languageVersion/build.log.expected

@@ -3,9 +3,9 @@ Buildfile: [TestData]/build.xml
 
 build:
   [kotlinc] Compiling [[TestData]/main.kt] => [[Temp]/hello.jar]
-  [kotlinc] [TestData]/main.kt:1:18: error: the feature "definitely not null type parameters" is only available since language version 1.6
-  [kotlinc] fun <T> f(t: T): T!! = t!!
-  [kotlinc]                  ^
+  [kotlinc] [TestData]/main.kt:1:15: error: suspend function type is not allowed as supertypes
+  [kotlinc] interface A : suspend () -> Unit
+  [kotlinc]               ^
 
 ERR:
 

compiler/testData/integration/ant/jvm/languageVersion/main.kt

@@ -1 +1 @@
-fun <T> f(t: T): T!! = t!!
+interface A : suspend () -> Unit