Python path autocomplete: be aware of the rest of the string

[etiennebacher]

It would be great if path completion in Python could take into account the rest of the string that is on the RHS of the cursor. Currently it doesn't, which leads to e.g. duplicated file extensions:

foo.py.-.tidypolars.-.Positron.2025-11-14.16-31-16.mp4

In a sense, that's similar to #2574 but for path completion. Maybe related to #5345 too.

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Positron Version: 2025.11.0 (user setup) build 234
Code - OSS Version: 1.105.0
Commit: 807acdf
Date: 2025-10-31T23:21:13.588Z
Electron: 37.6.0
Chromium: 138.0.7204.251
Node.js: 22.19.0
V8: 13.8.258.32-electron.0
OS: Windows_NT x64 10.0.19045

[juliasilge]

Thank you for the feedback! I added this note to #5345, for when we look at natively (i.e. not using the Jedi behavior) providing path completions for Python.