feat(react-cap-theme): Storybook Theme Switch

[pixel-perfectionist]

No description provided.

[GianoglioEnrico]

With this configuration when switching from fluent{Light/Dark} to cap{Light/Dark} theme, stories crashes.

Fluent{Light/Dark} entries do not set any custom style hooks, so Fluent components fall back to internal noop style hooks (zero React hooks called inside). When the theme switcher selects CAP{Light/Dark}, it flips that prop (customStyleHooks_unstable) on the same FluentProvider, so the same runs more hooks under CAP than under Fluent (and vice versa). React reconciles the same instance with a different hook count and crashes ("Rendered more/fewer hooks than expected") → white screen in the canvas.

Note: on the Docs page the components still render — each example remounts inside Storybook's per-example error boundary, so the crash is swallowed visually — but the error is still thrown and logged in the browser DevTools console. The Default (component canvas) stories have no such boundary, so they crash completely with a white screen.

Fix:
Drop the fluentLight / fluentDark entries and keep only the CAP ones:

Suggested change

	fluentLight: { title: 'Fluent UI Light', theme: webLightTheme },
	fluentDark: { title: 'Fluent UI Dark', theme: webDarkTheme },
	capLight: {
	title: 'CAP Light',
	theme: capLightTheme,
	styleHooks: CAP_STYLE_HOOKS,
	},
	capDark: {
	title: 'CAP Dark',
	theme: capDarkTheme,
	styleHooks: CAP_STYLE_HOOKS,
	capLight: {
	title: 'CAP Light',
	theme: capLightTheme,
	styleHooks: CAP_STYLE_HOOKS,
	},
	capDark: {
	title: 'CAP Dark',
	theme: capDarkTheme,
	styleHooks: CAP_STYLE_HOOKS,

Rationale: The tokens in capLightTokens and capDarkTokens that extend webLightTheme / webDarkTheme are already part of Fluent UI core's token set in recent versions. They only need to be patched in here because the contrib package is pinned to an older @fluentui/react-components. Once that dependency is bumped, these capLightTokens / capDarkTokens overrides become redundant and can be deleted — capLightTheme would collapse to webLightTheme (same for dark), so the stories would render identically with no manual token patching needed.