feat(dapps) fail on Wallet Connect unsupported networks

Also extend the generic error handling of approval errors

Updates: #14676

ui/app/AppLayouts/Wallet/services/dapps/WalletConnectService.qml

@@ -131,7 +131,12 @@ QObject {
 
         function onBuildApprovedNamespacesResult(approvedNamespaces, error) {
             if(error) {
-                // TODO: error reporting
+                // Check that it contains Non conforming namespaces"
+                if (error.includes("Non conforming namespaces")) {
+                    root.pairingUriValidated(Pairing.uriErrors.unsupportedNetwork)
+                } else {
+                    root.pairingUriValidated(Pairing.uriErrors.unknownError)
+                }
                 return
             }
 

ui/app/AppLayouts/Wallet/services/dapps/types/Pairing.qml

@@ -10,5 +10,7 @@ QtObject {
         readonly property int invalidUri: 3
         readonly property int alreadyUsed: 4
         readonly property int expired: 5
+        readonly property int unsupportedNetwork: 6
+        readonly property int unknownError: 7
     }
 }

ui/imports/shared/popups/walletconnect/PairWCModal/WCUriInput.qml

@@ -48,6 +48,12 @@ ColumnLayout {
             }
             if (errorText.text.length > 0) {
                 return false
+            } else if(root.errorState === Pairing.uriErrors.unsupportedNetwork) {
+                errorText.text = qsTr("dApp is requesting to connect on an unsupported network")
+                return false
+            } else if(root.errorState === Pairing.uriErrors.unknownError) {
+                errorText.text = qsTr("Unexpected error occurred, please try again")
+                return false
             }
 
             return true