Update monitor-prometheus-and-grafana-integration-tidb-cloud-dynamic-…

[huoyao1125]

…tracker-essential.json

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[gemini-code-assist]

Code Review

This pull request removes the 'Request Unit' row and 'Resource Group RU' panel from the Grafana dashboard configuration. Feedback indicates that this removal leads to an incomplete dashboard and inconsistency with the internal documentation. It is suggested to update the panel with the correct metric names, such as tidbcloud_resource_manager_resource_unit_read_request_unit, rather than deleting the section entirely.

[gemini-code-assist]

The removal of the 'Request Unit' section makes the dashboard incomplete and inconsistent with its internal description (line 55), which states that it includes 'resource unit metrics'. Since these metrics are essential for monitoring TiDB Cloud Essential clusters and are documented as available in the integration guide, you should update the panels to use the current metric names (such as tidbcloud_resource_manager_resource_unit_read_request_unit and tidbcloud_resource_manager_resource_unit_write_request_unit) instead of removing them entirely.

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