put maySendMessage stub on stubRoom in the right place

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

test/test-utils.js

@@ -247,12 +247,12 @@ export function mkStubRoom(roomId = null) {
         getVersion: () => '1',
         shouldUpgradeToVersion: () => null,
         getMyMembership: () => "join",
+        maySendMessage: sinon.stub().returns(true),
         currentState: {
             getStateEvents: sinon.stub(),
             mayClientSendStateEvent: sinon.stub().returns(true),
             maySendStateEvent: sinon.stub().returns(true),
             maySendEvent: sinon.stub().returns(true),
-            maySendMessage: sinon.stub().returns(true),
             members: [],
         },
         tags: {