[client-app] Rate limit error reporting for message processing errors

Summary:
This should prevent us from flooding Sentry with errors like this one:
https://sentry.io/nylas/nylas-mail/issues/230605150/

Test Plan: manual

Reviewers: spang, mark, halla, evan

Reviewed By: evan

Differential Revision: https://phab.nylas.com/D4151

packages/client-sync/src/message-processor/index.js

@@ -153,7 +153,12 @@ class MessageProcessor {
         desiredParts,
       })
       const fingerprint = ["{{ default }}", "message processor", err.message];
-      NylasEnv.reportError(err, {fingerprint: fingerprint})
+      NylasEnv.reportError(err, {fingerprint,
+        rateLimit: {
+          ratePerHour: 30,
+          key: `MessageProcessorError:${err.message}`,
+        },
+      })
 
       // Keep track of uids we failed to fetch
       const {failedUIDs = []} = folder.syncState