RegExp.rightContext differs between Jerryscript and V8

[Qbtly]

JerryScript revision

ff9ff8f36c967890b5ebb240d9fa90d6e351aa01

Build platform

Ubuntu 22.04.3

Build steps

python ./tools/build.py --builddir=xxx --clean --debug --compile-flag=-fsanitize=address --compile-flag=-g --strip=off --lto=off --logging=on --line-info=on --error-message=on --stack-limit=20

Test case

var str = "ab";
var pattern = /a/;
str.split(pattern);
print(RegExp.rightContext);

Execution steps

./xxx/bin/jerry poc.js

Output

Jerryscript: undefined
V8: b