fix(CustomCatalog): adapt MetricsDiv text color for dark mode

[sahillpaul]

Removed hardcoded rgba(26, 26, 26, .8) color and replaced it with theme.palette.text.default to ensure accessibility contrast when dark mode is toggled.

Notes for Reviewers
This resolves a critical WCAG accessibility contrast bug. Previously, the metrics text on the CustomCatalogCard became completely unreadable against the dark teal background when the application was toggled into Dark Mode. The MetricsDiv component now fully respects the Sistent theme contract.

This PR fixes #1647

Signed commits

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[gemini-code-assist]

Code Review

This pull request updates the MetricsDiv styled component in style.tsx to use the theme's default text color instead of a hardcoded RGBA value. The reviewer noted that this color property is redundant because the child components explicitly define their own colors, and suggested removing the property entirely along with the unused theme parameter.

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[gemini-code-assist]

The color property on MetricsDiv is redundant and has no effect on the rendered UI. This is because both of its children explicitly define their own colors:

• Icon has an explicit fill prop: fill={theme.palette.mode === 'light' ? DARK_TEAL : SNOW_WHITE}.
• MetricsCount has an explicit color styled property: color: theme.palette.mode === 'light' ? DARK_TEAL : SNOW_WHITE}.

To keep the codebase clean and avoid misleading future developers, we should remove the redundant color property and the unused theme parameter.

Suggested change

	export const MetricsDiv = styled('div')(({ theme }) => ({
	display: 'flex',
	alignItems: 'center',
	gap: '4px',
	fontSize: '0.2rem',
	color: 'rgba(26, 26, 26, .8)',
	color: theme.palette.text.default,
	export const MetricsDiv = styled('div')(() => ({
	display: 'flex',
	alignItems: 'center',
	gap: '4px',
	fontSize: '0.2rem',