fix: TiCDC new arch dashboard file is missing (#895)

[ti-chi-bot]

This is an automated cherry-pick of #895

Only setting in the following two places is not enough:

• monitoring/monitoring.yaml

  Lines 22 to 23 in 71d0c7b

  	- repo_name: "ticdc"
  	monitor_path: "metrics/grafana"

• monitoring/cmd/init.sh

  Lines 99 to 101 in 71d0c7b

  	# TiCDC New Arch
  	cp /tmp/ticdc_new_arch.json $GF_PROVISIONING_PATH/dashboards
  	sed -i 's/Test-Cluster-TiCDC-New-Arch/'$TIDB_CLUSTER_NAME'-TiCDC/g' $GF_PROVISIONING_PATH/dashboards/ticdc_new_arch.json

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: csuzhangxc

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Details

Needs approval from an approver in each of these files:

• OWNERS [csuzhangxc]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-11-10 09:28:07.30033033 +0000 UTC m=+694336.743360219: ☑️ agreed by csuzhangxc.