Enforce HS disabling E2EE in DM creation too (Element Pro) (#7292)

This part was missing from the implementation of this Element Pro feature, which incorrectly only applied to rooms.

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/MatrixClient.kt

@@ -84,7 +84,7 @@ interface MatrixClient {
     suspend fun ignoreUser(userId: UserId): Result<Unit>
     suspend fun unignoreUser(userId: UserId): Result<Unit>
     suspend fun createRoom(createRoomParams: CreateRoomParameters): Result<RoomId>
-    suspend fun createDM(userId: UserId): Result<RoomId>
+    suspend fun createDM(userId: UserId, isEncrypted: Boolean): Result<RoomId>
     suspend fun getProfile(userId: UserId): Result<MatrixUser>
     suspend fun searchUsers(searchTerm: String, limit: Long): Result<MatrixSearchUserResults>
     suspend fun setDisplayName(displayName: String): Result<Unit>

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/room/StartDM.kt

@@ -18,6 +18,7 @@ import io.element.android.libraries.matrix.api.core.UserId
 suspend fun MatrixClient.startDM(
     userId: UserId,
     createIfDmDoesNotExist: Boolean,
+    isEncryped: Boolean,
 ): StartDMResult {
     return findDM(userId)
         .fold(
@@ -25,7 +26,7 @@ suspend fun MatrixClient.startDM(
                 if (existingDM != null) {
                     StartDMResult.Success(existingDM, isNew = false)
                 } else if (createIfDmDoesNotExist) {
-                    createDM(userId).fold(
+                    createDM(userId, isEncryped).fold(
                         { StartDMResult.Success(it, isNew = true) },
                         { StartDMResult.Failure(it) }
                     )