Extend panel with "go back" slot & height

What does this MR do?

Split of !29902 (merged), this MR prepares the components to implement #214882 (closed)

Extend panel with "go back" slot and height

• Add id in panel mapping from backend to identify panels more esily
• Add slot for back button as in designs
• Allow height to be set to the chart from the dashboard level via $attrs
• Adds a "Expand panel" menu item when @expand listener is set
• Refactor: Reduce duplication by using in panel for chart components

Screenshots

No changes.

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
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Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

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• Label as security and @ mention @gitlab-com/gl-security/appsec
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