KT-9498 extension: now type can be inferred for getter with expression body

idea/testData/quickfix/typeAddition/propertyWithGetterWithBlockBody.kt

@@ -0,0 +1,12 @@
+// "Specify type explicitly" "false"
+// ERROR: This property must either have a type annotation, be initialized or be delegated
+// ACTION: Convert member to extension
+// ACTION: Convert property to function
+// ACTION: Move to companion object
+
+class My {
+    val <caret>x
+        get() {
+            return 3.14
+        }
+}

idea/testData/quickfix/typeAddition/propertyWithGetterWithInferredType.kt

@@ -0,0 +1,6 @@
+// "Specify type explicitly" "true"
+
+class My {
+    val <caret>x
+        get() = "abc"
+}

idea/testData/quickfix/typeAddition/propertyWithGetterWithInferredType.kt.after

@@ -0,0 +1,6 @@
+// "Specify type explicitly" "true"
+
+class My {
+    val x: String
+        get() = "abc"
+}

idea/testData/quickfix/typeAddition/propertyWithRecursiveGetter.kt

@@ -0,0 +1,7 @@
+// "Specify type explicitly" "false"
+// ERROR: This property must either have a type annotation, be initialized or be delegated
+
+class A {
+    val a
+        get() = a
+}