Fix duplicate export declarations and migrate ContactsView with sub-components

- Remove duplicate NOTIFY_INVITE_MISSING and NOTIFY_INVITE_PROCESSING_ERROR exports
- Update InviteOneAcceptView.vue to use correct NOTIFY_INVITE_TRUNCATED_DATA constant
- Migrate ContactsView to PlatformServiceMixin and extract into modular sub-components
- Resolves TypeScript compilation errors preventing web build

src/views/AccountViewView.vue

@@ -258,7 +258,7 @@
 
     <!-- id used by puppeteer test script -->
     <h3
-      id="advanced"
+      data-testid="advancedSettings"
       class="text-blue-500 text-sm font-semibold mb-3 cursor-pointer"
       @click="toggleShowGeneralAdvanced"
     >
@@ -1092,13 +1092,11 @@ export default class AccountViewView extends Vue {
       this.publicHex = identity.keys[0].publicKeyHex;
       this.publicBase64 = Buffer.from(this.publicHex, "hex").toString("base64");
       this.derivationPath = identity.keys[0].meta?.derivationPath as string;
-      
     } else if (account?.publicKeyHex) {
       // use the backup values in the top level of the account object
       this.publicHex = account.publicKeyHex as string;
       this.publicBase64 = Buffer.from(this.publicHex, "hex").toString("base64");
       this.derivationPath = account.derivationPath as string;
-
     }
   }