Fix decrypt message confirmation UI crash (#10252)

The decrupt message confirmation UI will crash if the origin metadata
is not present. This PR makes the UI tolerant of that metadata being
missing. It was always intended to be optional anyway.

ui/app/pages/confirm-decrypt-message/confirm-decrypt-message.component.js

@@ -174,8 +174,9 @@ export default class ConfirmDecryptMessage extends Component {
     const { decryptMessageInline, domainMetadata, txData } = this.props
     const { t } = this.context
 
-    const origin = domainMetadata[txData.msgParams.origin]
-    const notice = t('decryptMessageNotice', [origin.name])
+    const originMetadata = domainMetadata[txData.msgParams.origin]
+    const name = originMetadata?.name || txData.msgParams.origin
+    const notice = t('decryptMessageNotice', [txData.msgParams.origin])
 
     const {
       hasCopied,
@@ -191,15 +192,15 @@ export default class ConfirmDecryptMessage extends Component {
         {this.renderAccountInfo()}
         <div className="request-decrypt-message__visual">
           <section>
-            {origin.icon ? (
+            {originMetadata?.icon ? (
               <img
                 className="request-decrypt-message__visual-identicon"
-                src={origin.icon}
+                src={originMetadata?.icon}
                 alt=""
               />
             ) : (
               <i className="request-decrypt-message__visual-identicon--default">
-                {origin.name.charAt(0).toUpperCase()}
+                {name.charAt(0).toUpperCase()}
               </i>
             )}
             <div className="request-decrypt-message__notice">{notice}</div>