jak3: fix hud sprite crash + add entity debugger (#3516)

test/decompiler/reference/jak3/engine/geometry/path-h_REF.gc

@@ -8,12 +8,10 @@ Although it contains a `curve`, the knot part is not populated, so it's just tre
 a bunch of line segments from the control points.
 The child class curve-control does fill out the knot data and is a proper b-spline.
 These path-controls are typically allocated on a process heap."
-  ((flags       path-control-flag)
-   (name        symbol)
-   (process     process-drawable)
-   (curve       curve   :inline)
-   (num-cverts  int32   :overlay-at (-> curve num-cverts))
-   (cverts      uint32  :overlay-at (-> curve cverts))
+  ((flags    path-control-flag)
+   (name     symbol)
+   (process  process-drawable)
+   (curve    curve  :inline)
    )
   (:methods
     (new (symbol type process symbol float entity symbol) _type_)