text-overflow: simple mixed-bidi cases

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…He oWorldAxxxxBHelloWorldAxxxxBHelloWorldAxxxxBHelloWorld
…He oWorld
AxxxxB…HelloWorl AxxxxBHelloWorldAxxxxBHelloWorld
H …oWorldAxxxxBHelloWorldAxxxxBHelloWorldAxxxxBHelloWorld
H …oWorld
…AxxxxBHelloWorldAxxxxBHelloWorldAxxxxBHelloWorldAxxxxBHelloW ld
…HelloWorldAxxxxBHelloWorldAxxxxBHelloWorldAxxxxBHelloW ld
…HelloW ld
AxxxxBHelloWorldAxxxxBHelloWorldAxxxxBHelloWorldAxxxxBHelloW…
HelloWorldAxxxxBHelloWorldAxxxxBHelloWorldAxxxxBHelloW…
HelloW…