Implement `direction` property (#906)
1<test name="blockflex_flex_in_block__content_box_rtl" use-rounding="true">
2 <viewport width="max-content" height="max-content"/>
3 <input>
4 <div display="block" box-sizing="content-box" direction="rtl" width="200px">
5 <div display="flex" box-sizing="content-box" direction="rtl">
6 <div box-sizing="content-box" direction="rtl" width="50px" height="50px"/>
7 </div>
8 <div display="block" box-sizing="content-box" direction="rtl" width="50px" height="20px"/>
9 </div>
10 </input>
11 <expectations>
12 <node x="0" y="0" width="200" height="70">
13 <node x="0" y="0" width="200" height="50">
14 <node x="150" y="0" width="50" height="50"/>
15 </node>
16 <node x="150" y="50" width="50" height="20"/>
17 </node>
18 </expectations>
19</test>