fix(br): use failpoint tidb-server instead

[purelind]

Since pingcap/tidb#52734, we need to use failpoint tidb-server for br integration test

[ti-chi-bot]

I have already done a preliminary review for you, and I hope to help you do a better job.

Based on the pull request and the provided diff, the key change is that the make build_for_br_integration_test command has been replaced with (make failpoint-enable && make && make failpoint-disable) command. This change is made to use the failpoint tidb-server instead of the regular tidb-server.

There are no potential problems identified in the pull request. However, it is recommended to test the changes in a local environment before merging the pull request to ensure that the changes do not cause any issues.

As for fixing suggestions, it is recommended to add some information to the pull request description about how the changes were tested and provide some results or logs to support the changes. This would help the reviewer to have a better understanding of the changes and ensure that the changes meet the acceptance criteria.

[ti-chi-bot]

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