[system] remove links from markdown and move them to link panel

[jakubgalecki0]

Proposed commit message

Fixes broken dashboard navigation in non-default Kibana spaces for the System integration. Markdown panels use hardcoded links that don't resolve correctly outside the default space — the fix is to replace navigation links with space-aware Links panels and remove hardcoded URL references.

Changes:

• system-79ffd6e0 (Host Overview) — replaced hardcoded #/dashboard/system-Metrics-system-overview markdown link with a proper Links panel referencing System Overview by ID
• system-0e70e1bd, system-2c4debf0, system-3c46ecdb, system-db94459a — removed hardcoded Integration Page link from description markdown panels

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.
• I have verified that any added dashboard complies with Kibana's Dashboard good practices

Author's Checklist

• [ ]

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[elastic-vault-github-plugin-prod]

🚀 Benchmarks report

Package system 👍(1) 💚(0) 💔(2)

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Data stream	Previous EPS	New EPS	Diff (%)	Result
security	1808.32	1194.74	-613.58 (-33.93%)	💔
syslog	500000	250000	-250000 (-50%)	💔

To see the full report comment with /test benchmark fullreport

[yomduf]

Looks like this is a bit stalled

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: 95bb434

History

• 💚 Build #41144 succeeded a2a2c84
• 💚 Build #41031 succeeded 80a074d
• 💚 Build #40913 succeeded ec9aa60
• 💚 Build #40837 succeeded e8e5bc2
• 💚 Build #40189 succeeded 6dcf83f

[elastic-vault-github-plugin-prod]

Package system - 2.17.0 containing this change is available at https://epr.elastic.co/package/system/2.17.0/