Implement `direction` property (#906)
1<test name="percent_absolute_position__border_box_ltr" use-rounding="true">
2 <viewport width="max-content" height="max-content"/>
3 <input>
4 <div direction="ltr" flex-direction="column" width="60px" height="50px">
5 <div direction="ltr" position="absolute" width="100%" height="50px" left="50%">
6 <div direction="ltr" width="100%"/>
7 <div direction="ltr" width="100%"/>
8 </div>
9 </div>
10 </input>
11 <expectations>
12 <node x="0" y="0" width="60" height="50">
13 <node x="30" y="0" width="60" height="50">
14 <node x="0" y="0" width="30" height="50"/>
15 <node x="30" y="0" width="30" height="50"/>
16 </node>
17 </node>
18 </expectations>
19</test>