Fix the hash badge's unreachable IPFS URL check

The gateway-aware validity check in NFTHashStatus sat behind
'originalUri' in nftPreview, but NFTPreviewState has no originalUri
field, so the guard always returned early: isValidURI stayed true, the
'URL is not valid' badge never showed for unfetchable ipfs URIs, and
the ipfsToGatewayUrl path was dead code (Bugbot, PR Chia-Network#3029).

The check now validates nftPreview.uri directly. Message precedence is
unchanged: a file that already verified from the cache still reports
'Hash matches' - the URL branch is only reached for unverified states,
which is exactly when an unfetchable URI is the thing worth reporting.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017NXWAjaHb9SFafLeguTHd8

Author: jlobue10

packages/gui/src/components/nfts/NFTHashStatus.tsx

@@ -37,19 +37,18 @@ export default function NFTHashStatus(props: NFTHashStatusProps) {
   const failedFetch = preview ? nftPreview?.failedFetch : data?.failedFetch;
 
   const isValidURI = useMemo(() => {
-    if (!nftPreview || !('originalUri' in nftPreview)) {
+    const uri = nftPreview?.uri;
+    if (!uri) {
+      // nothing to validate — other branches cover the missing-preview cases
       return true;
     }
 
-    if (nftPreview.uri) {
-      // While the user has IPFS gateway fetching enabled, ipfs:// URIs are
-      // served through an HTTPS gateway by the cache layer, so validate the
-      // gateway form instead of flagging them as invalid. With the option
-      // off they are not fetchable and stay flagged.
-      return isValidURL(ipfsGateway ? ipfsToGatewayUrl(nftPreview.uri) : nftPreview.uri);
-    }
-
-    return false;
+    // While the user has IPFS gateway fetching enabled, ipfs:// URIs are
+    // served through an HTTPS gateway by the cache layer, so validate the
+    // gateway form instead of flagging them as invalid. With the option off
+    // they are not fetchable and stay flagged — unless the file already
+    // verified from the cache, which the message branches above this check.
+    return isValidURL(ipfsGateway ? ipfsToGatewayUrl(uri) : uri);
   }, [nftPreview, ipfsGateway]);
 
   const icon = useMemo(() => {