feat: include size 32 (catalog icon) sprites in nitro bundles

The SWF-to-Nitro converter previously dropped the size 32 visualization
and any sprite image whose name contained '_32_', so bundles lacked the
small/catalog render size. Keep them so each furniture bundle renders
correctly at every scale the client requests.

- xml-processor: stop skipping visualization size === 32
- index.ts: stop excluding '_32_' sprite assets/images from the sheet

src/lib/services/swf/xml-processor.ts

@@ -426,8 +426,9 @@ export function processVisualization(xml: string): NitroVisualization[] {
 
 	for (const viz of findChildren(graphics, "visualization")) {
 		const size = parseInt(viz.attrs.size || "64", 10);
-		// Skip size 32 (small catalog icons) – only keep size 1 (special) and 64 (standard)
-		if (size === 32) continue;
+		// Keep size 1 (special), 32 (small catalog icons) and 64 (standard) so the
+		// bundle renders correctly at every scale the client requests.
+		if (size <= 0) continue;
 
 		const layerCount = parseInt(viz.attrs.layerCount || "1", 10);
 		const angle = parseInt(viz.attrs.angle || "45", 10);