fix: remove rlement endpoints and links from the HealthChat

* fix(healthchat): switch off analytics, crash and bug reporting endpoints

Upstream ships *.localhost placeholders in Secrets.swift and marks the file assume-unchanged; with analytics on, the Element Call widget was handed Element's own PostHog and Sentry. nil hides the analytics prompt, the Analytics and Report a problem entries until HealthChat runs its own services.

* feat(healthchat): hide the Labs entry in settings

* fix(healthchat): point Copyright and the analytics terms at healthchat.ch

* docs(healthchat): add the 26.11.1 release notes

* feat(healthchat): drop the Element help links

* feat(healthchat): switch off location sharing

* test(healthchat): skip the analytics suite without PostHog

ElementX/Sources/AppHooks/Hooks/SettingsScreenHook.swift

@@ -15,6 +15,9 @@ nonisolated protocol SettingsScreenHookProtocol: Sendable {
     
     /// Called whenever the settings screen appears, so the section reflects what the user just did.
     @MainActor func refreshAccountStatus()
+    
+    /// Whether the Labs entry (experimental upstream features) is offered at all.
+    var showsLabs: Bool { get }
 }
 
 struct DefaultSettingsScreenHook: SettingsScreenHookProtocol {
@@ -23,4 +26,8 @@ struct DefaultSettingsScreenHook: SettingsScreenHookProtocol {
     }
     
     func refreshAccountStatus() { }
+    
+    var showsLabs: Bool {
+        true
+    }
 }