FILE_PWD should be set when executing nu script.nu #7139
Description
Related problem
See #7134 -- this changes the cwd in the parser but not the FILE_PWD
Describe the solution you'd like
The FILE_PWD should probably be set the same way as in e.g. overlay use command when running a script with nu script.nu.
Describe alternatives you've considered
No response
Additional context and details
No response