prevent native REPL from caching state between sessions

[hutch3232]

• Closes Native REPL wrongly caches state from previous session #24359

Definitely warrants scrutiny / input as I've never written typescript before. Solved with trial and error + LLMs.

[hutch3232]

@microsoft-github-policy-service agree

[anthonykim1]

First of all, nice job and thank you for doing this.

One thing I want to suggest here:

Particularly in regards to:

                    this.pythonServer.dispose();
                    this.pythonServer = createPythonServer([this.interpreter.path as string], this.cwd);

After we dispose the "old" Python REPL server directly, we should add the new pythonServer into disposables array,
similar to

vscode-python/src/client/repl/replController.ts

Lines 9 to 10 in f12d5bc

	const server = createPythonServer([interpreterPath], cwd);
	disposables.push(server);

when we create Python (REPL) Server on createReplController function.

So essentially after the above referenced code that you contributed (in src/client/repl/nativeRepl.ts) could add line this.disposables.push(this.pythonServer);

Great work!

[hutch3232]

@anthonykim1 I saw that I had a CI failure due to not having included a test for the new code. I have attempted to add that now.

Full disclosure: I don't know if the test actually works. I had planned to run it before and after applying my proposed fix, but was unable to. I tried very hard to run the test suite but could not get it to go. Even using the included .devcontainer was giving me a lot of issues.