Add Windows Platform Release constant

[vivekjm]

Description

Type of Change

• New feature (non-breaking change which adds functionality)

Why

Platform.constants['Release'] is currently undefined on Windows, while React Native Android exposes a Release string for the OS release version. This adds the Windows equivalent so callers can read the OS release from Platform.constants.

Resolves #11012

What

• Added Release to the Windows PlatformConstants Flow spec and JS platform types.
• Populated Release in the native Windows PlatformConstants module from AnalyticsInfo.VersionInfo.DeviceFamilyVersion(), formatted as major.minor.build.revision.
• Left the existing numeric osVersion API contract value unchanged.

Screenshots

Not applicable.

Testing

• ./node_modules/.bin/prettier --plugin=prettier-plugin-hermes-parser --check vnext/src-win/src/private/specs_DEPRECATED/modules/NativePlatformConstantsWindows.js vnext/src-win/Libraries/Utilities/Platform.windows.js vnext/src-win/Libraries/Utilities/PlatformTypes.js
• ./../node_modules/.bin/react-native-windows-codegen --files 'src/**/*Native*.js' --namespace Microsoft::ReactNativeSpecs --libraryName rnwcore --componentsWindows --modulesWindows --internalComponents --modulesCxx --test from vnext
• ./node_modules/.bin/eslint vnext/src-win/src/private/specs_DEPRECATED/modules/NativePlatformConstantsWindows.js vnext/src-win/Libraries/Utilities/Platform.windows.js vnext/src-win/Libraries/Utilities/PlatformTypes.js
• git diff --check

I also tried npx just-scripts codegen:check, but this macOS checkout could not load vnext/just-task.js because pwsh.exe/dotnet tooling was unavailable. I tried flow check from vnext; it failed on existing repository-wide missing-module and unused-suppression errors unrelated to these files.

Changelog

Should this change be included in the release notes: yes

Add Platform.constants.Release on Windows with the OS release version string.

Microsoft Reviewers: Open in CodeFlow

[vivekjm]

Closing this because it overlaps with existing similar work and should not compete for maintainer review.