Fix intentions tests after types enhancement

Types became more accurate

idea/testData/refactoring/extractFunction/controlFlow/returnTypeCandidates/javaAnnotatedNotNull.kt.after

@@ -4,4 +4,4 @@ fun test() {
     val s = s()
 }
 
-private fun s(): String = J.notNull()
+private fun s() = J.notNull()

idea/testData/refactoring/extractFunction/controlFlow/returnTypeCandidates/javaAnnotatedNullable.kt.after

@@ -3,4 +3,4 @@ fun test() {
     val s = s()
 }
 
-private fun s(): String? = J.nullable()
+private fun s() = J.nullable()

idea/testData/refactoring/extractFunction/typeParameters/typeParameterNotResolvableInTargetScope.kt.after

@@ -15,4 +15,4 @@ class Foo<T> {
     }
 }
 
-private fun <T> Foo<T>.t(l: String): T = map[l]
+private fun <T> Foo<T>.t(l: String) = map[l]

idea/testData/refactoring/extractFunction/typeParameters/typeParameterResolvableInTargetScope.kt.after

@@ -11,5 +11,5 @@ class Foo<T> {
         return t(l)
     }
 
-    private fun t(l: String): T = map[l]
+    private fun t(l: String) = map[l]
 }

idea/testData/refactoring/introduceProperty/typeParameterNotResolvableInTargetScope.kt.after

@@ -3,7 +3,7 @@
 
 import java.util.*
 
-private val <T> Foo<T>.t: T
+private val <T> Foo<T>.t: T?
     get() = map[""]
 
 // SIBLING: