Move: Fix "whole file" mode detection for scripts

#KT-25857 Fixed

compiler/psi/src/org/jetbrains/kotlin/psi/psiUtil/ktPsiUtil.kt

@@ -624,4 +624,6 @@ fun KtModifierKeywordToken.toVisibility(): Visibility {
         KtTokens.INTERNAL_KEYWORD -> Visibilities.INTERNAL
         else -> throw IllegalArgumentException("Unknown visibility modifier:$this")
     }
-}
+}
+
+fun KtFile.getFileOrScriptDeclarations() = if (isScript()) script!!.declarations else declarations