[openCypher tck case] incorrect unicode literal

[czpmango]

neo4j test:

neo4j@neo4j> RETURN  '\uH';
Invalid input 'H': expected four hexadecimal digits specifying a unicode character (line 2, column 12 (offset: 12))
"RETURN  '\uH';"

nebula test:

(czp@nebula) [nba]> yield '\uH'
+------+
| uH   |
+------+
| "uH" |
+------+