fix: clear error when navigating to cached image info and pass RAW extension

Error from a failed image (e.g. DNG) persisted when navigating to a
previously cached image because the cache path skipped setError(null).
Also pass the original file extension to decodeToSharpCompat so RAW
variants get the correct temp file suffix for ExifTool/ImageMagick.

apps/web/src/components/tools/info-settings.tsx

@@ -45,6 +45,7 @@ export function InfoSettings() {
 
       const cached = cacheRef.current.get(index);
       if (cached) {
+        setError(null);
         setInfo(cached);
         return;
       }