[browser] Add chrome provisioning on macos

[radekdoulik]

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[Copilot]

Pull request overview

This pull request adds Chrome browser and ChromeDriver provisioning support for macOS to enable WASM browser testing on macOS. The changes align with existing Linux and Windows provisioning configurations.

Changes:

• Added macOS-specific Chrome version properties to BrowserVersions.props (version, revision, snapshot URL, and V8 version)
• Added macOS PropertyGroup in wasm-provisioning.targets to configure Chrome, ChromeDriver, and V8 binary paths and download URLs
• Updated error messages in three provisioning targets to include macOS as a supported platform

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 7 comments.

File	Description
eng/testing/BrowserVersions.props	Adds macOS Chrome/V8 version properties matching Linux/Windows versions (143.0.7499.40, revision 1536371, V8 14.3.127)
eng/testing/wasm-provisioning.targets	Adds macOS configuration block with directory names, binary names, URLs, and updates error conditions to include macOS support