[iOS][Feature Flags] Remove unused onboarding add to dock feature flag

[alessandroboron]

Task/Issue URL: https://app.asana.com/1/137249556945/project/1211834678943996/task/1211866468574274?focus=true
Tech Design URL:
CC:

Description

Removed the unused feature flag for onboarding add to dock from the codebase. The onboarding add-to-dock feature was released to all users a long time ago, so the feature flag is no longer needed.

Testing Steps

1. The feature flag was not used anywhere in the codebase so ensure only CI is green.

Impact and Risks

What could go wrong?

Quality Considerations

Notes to Reviewer

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Internal references:

Definition of Done | Engineering Expectations | Tech Design Template

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Note

Removes the unused onboardingAddToDock feature flag and its references from iOS/Core/FeatureFlag.swift.

• iOS/Core:
  • Remove FeatureFlag.onboardingAddToDock enum case in iOS/Core/FeatureFlag.swift.
  • Drop onboardingAddToDock from supportsLocalOverriding.
  • Remove onboardingAddToDock handling from source mapping.

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[Copilot]

Pull request overview

This PR removes the unused onboardingAddToDock feature flag from the iOS codebase. The onboarding add-to-dock feature has been fully rolled out to all users, making the feature flag obsolete.

• Removed the feature flag enum case and its associated configuration
• Cleaned up references in local overriding and source mapping
• Preserved pixel tracking and related functionality (feature remains active, just not flag-gated)

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[SabrinaTardio]

LGTM!