chore(mongodb): update dashboards for mongodb

[kongfei605]

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[Copilot]

Pull request overview

This PR updates the MongoDB dashboards to reflect updated metric label dimensions and to expand visibility into replica set and sharded cluster behavior.

Changes:

• Reworks dashboard variables to use cluster/topology/component/instance (and updates many PromQL selectors accordingly).
• Adds multiple new dashboard sections/panels (e.g., replica set details, storage/database, WiredTiger pressure, sharded cluster).
• Aligns several queries/templating definitions to use mongodb_up as the base metric for variable population.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 4 comments.

File	Description
inputs/mongodb/dashboard.json	Updates the built-in MongoDB dashboard JSON with new variables and many new panels/queries.
inputs/mongodb/dashboard_grafana.json	Updates the Grafana dashboard JSON: removes cl_role filtering, adds new sections/panels, and updates templating variables.

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 3 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 3 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 3 changed files in this pull request and generated 4 comments.

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