FEAT: prioritize exact matches on param name for intellisense tab-completions

[NickCrews]

Given:

• I have a function def foo(haystack: str, needle: str)
• at a call site I begin typing foo(haystack=bar, needle=nee
• In scope are several variables:
  • needed_columns_h
  • needed_columns_n
  • needle

Then intellisense suggests all three of these to me. But it sorts them alphabetically. So this leads to it suggesting needed_columns_h as the first choice. I would want needle to be the first choice.

I want to avoid the whole can of worms for more complex rankings of "which in-scope variable is the most likely to be correct", so I think even if it only prioritizes exact matches, that would be great. Slightly more complex, and probably still a better experience would be if it ranked them by eg damerau-levenshtein distance, and then broke ties with alphabetical sorting.