Autocomplete in reticulate::repl_python() wraps valid Python names in backticks (`)

[t-kalinowski]

When in the Python repl reticulalate::repl_python(), typing this

import anndata
anndata.__v<tab>

autocompletes:

anndata.`__version__`

[ronblum]

I can reproduce this in RStudio Desktop 2024.04.0-daily+712 and as far back as 2023.03.2+454, although it worked correctly in version RStudio-2022.07.2+576 (all on Windows 11).

Note: This only occurs with the objects surrounded by underscores.

[kevinushey]

Presumedly this is because the completion system is confused and thinks we're in R mode, and so treats __foo__ as a non-syntactic identifier. Probably a simple fix.

[t-kalinowski]

This might be a dup of #4231 ... from 2019?