fix(react-theme): Update CompoundBrandBackground and BrandStroke1

[miroslavstastny]

Update alias color tokens.

1) Brand stroke (Dark theme slot to be Brand 100)

2) Compound Brand Background (Dark theme slot)

Fixes #22685

[codesandbox-ci]

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Sandbox	Source
@fluentui/react 8 starter	Configuration
@fluentui/react-components 9 starter	Configuration

[fabricteam]

📊 Bundle size report

Package & Exports	Baseline (minified/GZIP)	PR	Change
react-theme Teams: all themes	31.347 kB 7.04 kB	31.349 kB 7.04 kB	2 B

Unchanged fixtures

Package & Exports	Size (minified/GZIP)
react-accordion Accordion (including children components)	73.754 kB 22.494 kB
react-badge Badge	20.965 kB 6.605 kB
react-badge CounterBadge	21.918 kB 6.919 kB
react-badge PresenceBadge	22.005 kB 6.582 kB
react-combobox Combobox	60.564 kB 20.751 kB
react-divider Divider	15.455 kB 5.57 kB
react-overflow hooks only	10.792 kB 4.125 kB
react-positioning usePopper	23.21 kB 8.084 kB
react-radio Radio	23.556 kB 7.898 kB
react-radio RadioGroup	8.205 kB 3.516 kB
react-spinbutton SpinButton	41.955 kB 11.856 kB
react-spinner Spinner	17.292 kB 5.865 kB
react-switch Switch	24.401 kB 8.024 kB
react-textarea Textarea	20.672 kB 7.07 kB
react-theme Single theme token import	69 B 89 B
react-theme Teams: Light theme	19.792 kB 5.694 kB
react-tooltip Tooltip	42.907 kB 14.761 kB

_{🤖 This report was generated against a6dffdbc85219e361d77deada85df37e7a3e6de0}

[size-auditor]

Asset size changes

Size Auditor did not detect a change in bundle size for any component!

Baseline commit: a6dffdbc85219e361d77deada85df37e7a3e6de0 (build)

[fabricteam]

Perf Analysis (@fluentui/react-components)

No significant results to display.

All results

Scenario	Render type	Master Ticks	PR Ticks	Iterations	Status
Avatar	mount	828	795	5000
Button	mount	542	509	5000
FluentProvider	mount	1745	1784	5000
FluentProviderWithTheme	mount	257	268	10
FluentProviderWithTheme	virtual-rerender	220	266	10
FluentProviderWithTheme	virtual-rerender-with-unmount	280	270	10
MakeStyles	mount	1521	1391	50000