fix(nostr): correctly resolve signer capabilities when methods are present

This fixes a critical issue where valid NIP-07 signers were treated as incapable of NIP-44/NIP-04 operations if their initial `capabilities` flag was false, even if the necessary methods (e.g., `nip44Decrypt`) were subsequently added or already present.

This addresses errors like "Gift wrap events require a NIP-44 decryptor" for users with valid extensions.

Co-authored-by: PR0M3TH3AN <[email protected]>

js/nostr/client.js

@@ -307,19 +307,16 @@ function resolveSignerCapabilities(signer) {
 
   return {
     sign:
-      typeof capabilities.sign === "boolean"
-        ? capabilities.sign
-        : typeof signer.signEvent === "function",
+      (typeof capabilities.sign === "boolean" && capabilities.sign) ||
+      typeof signer.signEvent === "function",
     nip44:
-      typeof capabilities.nip44 === "boolean"
-        ? capabilities.nip44
-        : typeof signer.nip44Encrypt === "function" ||
-          typeof signer.nip44Decrypt === "function",
+      (typeof capabilities.nip44 === "boolean" && capabilities.nip44) ||
+      typeof signer.nip44Encrypt === "function" ||
+      typeof signer.nip44Decrypt === "function",
     nip04:
-      typeof capabilities.nip04 === "boolean"
-        ? capabilities.nip04
-        : typeof signer.nip04Encrypt === "function" ||
-          typeof signer.nip04Decrypt === "function",
+      (typeof capabilities.nip04 === "boolean" && capabilities.nip04) ||
+      typeof signer.nip04Encrypt === "function" ||
+      typeof signer.nip04Decrypt === "function",
   };
 }