lazy imports allow `lazy import math.pi`

[DinoV]

Bug report

Bug description:

lazy import math.pi
print(math.pi)

as reported: https://discuss.python.org/t/sys-lazy-modules-clarification/108385

This is a big difference in that we allow these in lazy imports but not normal imports. It's also due to just a bunch of extra unnecessary logic. Fixing this now seems like it'd be better than letting people start doing this.

CPython versions tested on:

3.15

Operating systems tested on:

Linux

Linked PRs

• gh-155194: Fix not raising on non-module import #155189
• [3.15] gh-155194: Fix not raising on non-module import #155188