Match Shiny Grafaiai animation frames with Non-Shiny counterparts (#1477)

A user reported [here](https://discord.com/channels/1125469663833370665/1238339524778790922/1244817919985061978) that "Shiny grafaiai keeps fading in and out of existence".

The presumed culprit is frame 17 being set to have a width and height of 3 pixels.
To fix this, the code from the non-shiny .json was used instead, which used dimensions of 66x55, somewhat more reasonable for the targeted slice of spritesheet.

Not tested, with due concern given to the abysmal odds of specifically encountering a shiny Grafaiai.
... but the change shouldn't break anything, I hope?

public/images/pokemon/exp/shiny/945.json

@@ -146,14 +146,14 @@
 					"spriteSourceSize": {
 						"x": 0,
 						"y": 0,
-						"w": 3,
-						"h": 3
+						"w": 66,
+						"h": 55
 					},
 					"frame": {
-						"x": 132,
-						"y": 0,
-						"w": 3,
-						"h": 3
+						"x": 0,
+						"y": 112,
+						"w": 66,
+						"h": 55
 					}
 				},
 				{