Fixed doc-comment not attached to the first declaration with no package directive + incorrect placement of comments for enum entry

compiler/testData/psi/kdoc/Simple.txt

@@ -1,4 +1,6 @@
 JetFile: Simple.kt
+  PACKAGE_DIRECTIVE
+    <empty list>
   KDoc
     PsiElement(KDOC_START)('/**')
     PsiElement(KDOC_TEXT)(' line 0')
@@ -18,6 +20,4 @@ JetFile: Simple.kt
     PsiWhiteSpace('\n    ')
     PsiElement(KDOC_LEADING_ASTERISK)('**')
     PsiElement(KDOC_TEXT)(' line 6 ')
-    PsiElement(KDOC_END)('*/')
-  PACKAGE_DIRECTIVE
-    <empty list>
+    PsiElement(KDOC_END)('*/')