src: remove calls to deprecated v8 functions (NumberValue)
Remove all calls to deprecated v8 functions (here: Value::NumberValue) inside the code (src directory only).
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
documentation is changed or added -
commit message follows commit guidelines
/cc @addaleax @hashseed