siwe: re-enable warning UI for mismatched domains

- unblocks mismatched domain support
- we may re-add error handling here #18184
- reverts logic from #16616

app/scripts/lib/personal-message-manager.js

@@ -153,15 +153,6 @@ export default class PersonalMessageManager extends EventEmitter {
     const siwe = detectSIWE(msgParams);
     msgParams.siwe = siwe;
 
-    if (siwe.isSIWEMessage && req.origin) {
-      const { host } = new URL(req.origin);
-      if (siwe.parsedMessage.domain !== host) {
-        throw new Error(
-          `SIWE domain is not valid: "${host}" !== "${siwe.parsedMessage.domain}"`,
-        );
-      }
-    }
-
     // create txData obj with parameters and meta data
     const time = new Date().getTime();
     const msgId = createId();

app/scripts/lib/personal-message-manager.test.js

@@ -178,15 +178,5 @@ describe('Personal Message Manager', () => {
       const result2 = messageManager.getMsg(msgId2);
       expect(result2.msgParams.siwe.isSIWEMessage).toStrictEqual(false);
     });
-
-    it("should throw an error if the SIWE message's domain doesn't match", async () => {
-      const request = { origin: 'https://mismatched-domain.com' };
-      const { host: siweDomain } = new URL(origin);
-      const { host: browserDomain } = new URL(request.origin);
-      const expectedError = `SIWE domain is not valid: "${browserDomain}" !== "${siweDomain}"`;
-      await expect(async () => {
-        await messageManager.addUnapprovedMessage(msgParams, request);
-      }).rejects.toThrow(expectedError);
-    });
   });
 });