Skip range verification for non-ranged desc

Non-range desc  are always added to the wallet with the range [0,0]. After the descriptor is added, the wallet will  TopUp the keypool. For non-range descriptors, this process updates the desc range to [0,1].

Any attempts to update this non-range descriptor with a [0,0] range will result in an error because the range checks rejects new ranges not included in the old range.

Since  this is a non-range desc, the range information should be disregarded and AddWalletDescriptor should always succeed regardless of provided range information

src/wallet/scriptpubkeyman.cpp

@@ -2852,6 +2852,11 @@ bool DescriptorScriptPubKeyMan::CanUpdateToWalletDescriptor(const WalletDescript
         return false;
     }
 
+    if (!descriptor.descriptor->IsRange()) {
+        // Skip range check for non-range descriptors
+        return true;
+    }
+
     if (descriptor.range_start > m_wallet_descriptor.range_start ||
         descriptor.range_end < m_wallet_descriptor.range_end) {
         // Use inclusive range for error