feat(taxonomy): additional properties for ios sdk and mac catalyst

[ioannisj]

Problem

relates to: PostHog/posthog-ios#287

Changes

👉 Stay up-to-date with PostHog coding conventions for a smoother review.

Does this work well for both Cloud and self-hosted?

How did you test this code?

[greptile-apps]

PR Summary

Added two new iOS SDK properties to the taxonomy system to identify iOS apps running on macOS platforms, specifically tracking Mac Catalyst apps and iOS apps running on Apple Silicon Macs.

• Added $is_mac_catalyst_app property to identify Mac Catalyst apps running on macOS
• Added $is_ios_running_on_mac property to identify iOS apps running on Apple Silicon Macs
• Properties follow existing taxonomy structure in /frontend/src/lib/taxonomy.tsx
• Properties are boolean flags with examples of 'true'/'false' values

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[github-actions]

Size Change: +1.09 kB (+0.09%)

Total Size: 1.16 MB

Filename	Size	Change
frontend/dist/toolbar.js	1.16 MB	+1.09 kB (+0.09%)

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