Not Support Graceful Drain for Customized Image Tag

[KanShiori]

Bug Report

What version of Kubernetes are you using?

What version of TiDB Operator are you using?

What storage classes exist in the Kubernetes cluster and what are used for PD/TiKV pods?

What's the status of the TiDB cluster pods?

What did you do?

What did you expect to see?

What did you see instead?
We use our own internal image tag, TiDB operator version check will fail at https://github.com/pingcap/tidb-operator/blob/v1.4.0/pkg/manager/member/ticdc_scaler.go#L236 with error:

I0224 20:59:23.435983 1 pod_control.go:88] Pod: [tidb/adhoc-ticdc-0] updated successfully, : [tidb/adhoc]
I0224 20:59:23.436013 1 ticdc_scaler.go:323] ticdc.Upgrade: set pod adhoc-ticdc-0 in cluster tidb/adhoc annotation tidb.pingcap.com/ticdc-graceful-shutdown-begin-time to 2023-02-24T20:59:23Z successfully
E0224 20:59:23.444653 1 ticdc_scaler.go:238] ticdc.Upgrade: fail to compare TiCDC pod version "v6.5.0", version "master-1673029844-6fa0cfe0", error: improper constraint: >=master-1673029844-6fa0cfe0, skip graceful shutdown