strings containing NonOctalDecimalEscapeSequence should pass

[ascidian]

Since there is an implicit assumption that Annex B productions are valid in these tests, the following tests must pass per Annex B.1.2 String Literals

DoubleStringCharacter :: \ EscapeSequence
SingleStringCharacter :: \ EscapeSequence
EscapeSequence :: NonOctalDecimalEscapeSequence
NonOctalDecimalEscapeSequence :: one of 8 9

fail/0d5e450f1da8a92a.js: ('\9')
fail/748656edbfb2d0bb.js: ('\8')
fail/79f882da06f88c9f.js: "\8";
fail/92b6af54adef3624.js: "\9";