transform: hash the generated matrix

Making an exception for the transform node, we use a slightly
heavier hash to save more rendering time later.

Fixes #1560
Addresses some of #1360

app/node/input/time/timeinput.h

@@ -42,7 +42,7 @@ public:
 
   virtual NodeValueTable Value(const QString& output, NodeValueDatabase& value) const override;
 
-  virtual void Hash(const QString& output, QCryptographicHash& hash, const rational& time) const override;
+  virtual void Hash(const QString& output, QCryptographicHash& hash, const rational& time, const VideoParams& video_params) const override;
 
 };