Improve benchmark/detection summary chart width calculations. Fixes #945.

[MichaelBurgess]

No description provided.

[Copilot]

Pull Request Overview

This PR improves the width calculation logic for benchmark/detection summary charts by switching from percentage-based to pixel-based width calculations. This addresses issue #945 which likely involved incorrect chart segment widths.

• Replaced percentage-based width calculations with pixel-based calculations using container refs
• Added dynamic re-rendering when container sizes change through useEffect and usePrevious hooks
• Improved border handling for narrow chart segments with conditional border styling

Reviewed Changes

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

File	Description
ui/dashboard/src/components/dashboards/grouping/CheckSummaryChart/index.tsx	Refactored chart width calculations from percentage to pixel-based, added container refs and dynamic sizing logic
CHANGELOG.md	Added changelog entry for the bug fix

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