Changfeed rules filter is updated to be invalid format, changfeed status becomes to failed

[Tammyxia]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. What did you do? If possible, provide a recipe for reproducing the error.

• " tiup cdc cli changefeed update --config changfeed.toml -c replication-task-1 --pd=http://172.31.10.94:2379", update rules filter sucessfully.

• query this changfeed, check the filter rules is :
  "filter": {
  "rules": [
  "rtest1",
  "rtest2"
  ],

• Then the changfeed status become to failed, and cannot be resumed.
  

• There's no way to update filter rules to be correct format. Failed changfeed cannot be recovered.

2. What did you expect to see?
   If config file changfeed.toml has invalid content, the update cli should be failed to execute, to avoid the changfeed become failed status and unrecoverable.

3. What did you see instead?

4. Versions of the cluster

   • Upstream TiDB cluster version (execute SELECT tidb_version(); in a MySQL client):

     v5.0.0-nightly, Git Commit Hash: 09a4c57d00175ae3ff9c900d5fb67f6757c58181
     

   • TiCDC version (execute cdc version):

     release-version=v5.0.0-master] [git-hash=b33b7fa15b4986db069cfc031bcd7fb827207b0b]
     

[ben1009]

fixed by add a validation verifyReplicaConfig when load config

test result

config