Disable Sentry analytics - reuse Matomo

[NicolasBuquet]

Sentry framework is actually embedded in the application by Riot modules.

It is not instantiated nor used by default because it is dependent on a setting RiotSettings.shared.enableAnalytics.

The method RiotNSE/NotificationService:setupAnalytics() is called when receiving a notification.
It calls setupAnalytics() which calls analytics.startIfEnabled().
It fires Analytics which instantiates SentryMonitoringClient() but if, and only if RiotSettings.shared.enableAnalytics is TRUE.

RiotSettings.shared.enableAnalytics is linked to an option in the application's settings :

This option is set to FALSE by default.

The proposal is to hide this option in settings and to force RiotSettings.shared.enableAnalytics to FALSE too.

PostHog is also used in the application in place of Matomo since november 2022 : element-hq/element-ios#5035

PostHog must be removed too.