text-overflow: simple mixed-bidi cases

AxxxxBHelloWorldAxxxxBHelloWorldAxxxxBHelloWorldAxxxxBHelloWorld

HelloWorldAxxxxBHelloWorldAxxxxBHelloWorldAxxxxBHelloWorld

HelloWorld

AxxxxBHelloWorldAxxxxBHelloWorldAxxxxBHelloWorldAxxxxBHelloWorld

HelloWorldAxxxxBHelloWorldAxxxxBHelloWorldAxxxxBHelloWorld

HelloWorld