Rework FakeMatrixRoom so that it contains only lambdas. (#3229)

* Upgrade lint to 8.7.0-alpha01

* FakeMatrixRoom: lambda everywhere

Fix test compilation issues

features/invite/impl/src/test/kotlin/io/element/android/features/invite/impl/response/AcceptDeclineInvitePresenterTest.kt

@@ -92,9 +92,9 @@ class AcceptDeclineInvitePresenterTest {
         val client = FakeMatrixClient().apply {
             givenGetRoomResult(
                 roomId = A_ROOM_ID,
-                result = FakeMatrixRoom().apply {
+                result = FakeMatrixRoom(
                     leaveRoomLambda = declineInviteFailure
-                }
+                )
             )
         }
         val presenter = createAcceptDeclineInvitePresenter(client = client)
@@ -142,9 +142,9 @@ class AcceptDeclineInvitePresenterTest {
         val client = FakeMatrixClient().apply {
             givenGetRoomResult(
                 roomId = A_ROOM_ID,
-                result = FakeMatrixRoom().apply {
+                result = FakeMatrixRoom(
                     leaveRoomLambda = declineInviteSuccess
-                }
+                )
             )
         }
         val presenter = createAcceptDeclineInvitePresenter(