[geofencing] Remove experimental from Geofencing APIs. (#8323)

Fixes https://mapbox.atlassian.net/browse/MAPSSDK-914

This PR promotes the Geofencing API to stable by removing the
`experimental` attribute across several layers.

## Core Changes
* IDL Updates: The [Experimental] attribute is removed from all
Geofencing API Interface Definition Languages (IDLs).
* Maps SDKs: The MapboxExperimental attribution is removed from both the
Android and iOS Maps SDKs.

## ⚠️ Potential Breaking Changes (C++)
Action Required for C++ Consumers: The removal of the experimental flag
includes the removal of the experimental C++ namespace. Consumers
integrating the Geofencing C++ API must update their code to reflect the
new, stable namespace to avoid compilation errors.

cc @mapbox/core-sdk

cc @mapbox/maps-android

cc @mapbox/sdk-ci

cc @mapbox/maps-ios

---------

Co-authored-by: Changelog autocreator bot <[email protected]>
Co-authored-by: Mai Mai <[email protected]>
GitOrigin-RevId: 1cebb6718082ef08870e8a416f9cc452c954cbb3

Author: 3 people

CHANGELOG.md

@@ -7,6 +7,11 @@ Mapbox welcomes participation and contributions from everyone.
 ### ⚠️ Breaking changes
 * Remove line-cutout-width and change line-cutout-opacity default to 1.0
 
+## 11.17.0
+
+### Features ✨ and improvements 🏁
+* Promote Geofencing APIs to stable. Remove `@_spi(Experimental)` from Geofencing APIs.
+
 ## 11.17.0-rc.1 - 20 November, 2025
 
 ## 11.17.0-beta.2 - 14 November, 2025

Sources/Examples/AppDelegate.swift

@@ -3,7 +3,7 @@ import SwiftUI
 import Fingertips
 import OSLog
 @_spi(Experimental) import MapboxMaps
-@_spi(Experimental) import MapboxCommon
+import MapboxCommon
 
 @main
 class AppDelegate: UIResponder, UIApplicationDelegate {

Sources/Examples/SwiftUI Examples/GeofencingPlayground.swift

@@ -1,9 +1,8 @@
 import Foundation
 import SwiftUI
 @_spi(Experimental) import MapboxMaps
-@_spi(Experimental) import MapboxCommon
+import MapboxCommon
 
-/// This is an Example for Experimental API that is subject to change.
 struct GeofencingPlayground: View {
     @State private var showInfoSheet = false
     @State private var isochrone: Turf.Feature?

Sources/Examples/SwiftUI Examples/GeofencingUserLocation.swift

@@ -1,9 +1,8 @@
 import Foundation
 import SwiftUI
 @_spi(Experimental) import MapboxMaps
-@_spi(Experimental) import MapboxCommon
+import MapboxCommon
 
-/// This is an Example for Experimental API that is subject to change.
 struct GeofencingUserLocation: View {
     @State private var region: CircularRegion?
     @ObservedObject private var geofencing = Geofencing()