Ensure that the Rust room is not closed while the driver needs it. (#4694)

Author: bmarty

features/call/impl/src/main/kotlin/io/element/android/features/call/impl/utils/DefaultCallWidgetProvider.kt

@@ -48,7 +48,6 @@ class DefaultCallWidgetProvider @Inject constructor(
         ).getOrThrow()
 
         val driver = room.getWidgetDriver(widgetSettings).getOrThrow()
-        room.destroy()
 
         CallWidgetProvider.GetWidgetResult(
             driver = driver,

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/JoinedRustRoom.kt

@@ -595,6 +595,7 @@ class JoinedRustRoom(
             RustWidgetDriver(
                 widgetSettings = widgetSettings,
                 room = innerRoom,
+                joinedRustRoom = this,
                 widgetCapabilitiesProvider = object : WidgetCapabilitiesProvider {
                     override fun acquireCapabilities(capabilities: WidgetCapabilities): WidgetCapabilities {
                         return getElementCallRequiredPermissions(sessionId.value, baseRoom.deviceId.value)

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/widget/RustWidgetDriver.kt

@@ -9,6 +9,7 @@ package io.element.android.libraries.matrix.impl.widget
 
 import io.element.android.libraries.matrix.api.widget.MatrixWidgetDriver
 import io.element.android.libraries.matrix.api.widget.MatrixWidgetSettings
+import io.element.android.libraries.matrix.impl.room.JoinedRustRoom
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
@@ -24,6 +25,7 @@ import kotlin.coroutines.coroutineContext
 class RustWidgetDriver(
     widgetSettings: MatrixWidgetSettings,
     private val room: Room,
+    private val joinedRustRoom: JoinedRustRoom,
     private val widgetCapabilitiesProvider: WidgetCapabilitiesProvider,
 ) : MatrixWidgetDriver {
     // It's important to have extra capacity here to make sure we don't drop any messages
@@ -69,5 +71,6 @@ class RustWidgetDriver(
     override fun close() {
         receiveMessageJob?.cancel()
         driverAndHandle.driver.close()
+        joinedRustRoom.destroy()
     }
 }