[Chapel Merge] Reduce conservatism in GPU technote

Branch: refs/heads/main
Revision: eb13ad7
Author: e-kayrakli
Link: Reduce conservatism in GPU technote by e-kayrakli · Pull Request #20381 · chapel-lang/chapel · GitHub
Log Message:

Merge pull request #20381 from e-kayrakli/gpu-technote-dynamic-clarification

Reduce conservatism in GPU technote

Following a discussion, I wanted to check how we describe what we run on the GPU
and what we run on the CPU. I think the language we have there is a little bit
too static-sounding. The real behavior is more dynamic and much less strict than
the technote suggests.

This PR adjusts the language to make it sound closer to what actually happens.

[Reviewed by @stonea]

Test: