No telemetry is generated for Firefox actions triggered from the iOS Share Sheet

[data-sync-user]

Steps to Reproduce:

1. Open Safari on iOS.
2. Navigate to any webpage.
3. Tap the Share button.
4. From the iOS Share Sheet, select Firefox.
5. Choose one of the available actions (e.g. Open in Firefox).

Expected Result: A telemetry event is generated for the selected Firefox action.

Actual Result: No telemetry event is generated for these Firefox actions.

Device & build information: Device: iPhone 17 Pro Max (iOS 26.1) Build version: Latest Nightly v146.1 (65627)

Related to: https://mozilla-hub.atlassian.net/browse/FXIOS-14209

┆Issue is synchronized with this Jira Bug