The asyncio REPL can run relative import code

[Locked-chess-official]

Bug report

Bug description:

Nowadays the relative import code in normal REPL in 3.14 is invalid, but it still valid in asyncio REPL. Maybe follow the way in #134275 can fix it.

CPython versions tested on:

3.14

Operating systems tested on:

Windows

Linked PRs

• gh-140326: disable the relative import in asyncio REPL #140327