The `site` module must not load `_pyrepl` if `PYTHON_BASIC_REPL` env var is set

[vstinner]

Even if the new REPL is disabled by setting PYTHON_BASIC_REPL=1 env var, the site module still loads it. I propose to make sure that it's not loaded in this case.

Moreover, PYTHON_BASIC_REPL should be ignored if -E or -I command line options are used.

Linked PRs

• gh-125096: Don't import _pyrepl in site if PYTHON_BASIC_REPL #125097
• [3.13] gh-125096: Don't import _pyrepl in site if PYTHON_BASIC_REPL (#125097) #125111

[nineteendo]

Can this be closed?

[vstinner]

Right, it's fixed, I close the PR.