chore(download): remove windows instructions from fnm

[avivkeller]

Unfortunately, because there was response in #7487 to multiple requests over the past few weeks, this PR removes the Windows instructions from fnm.

CC @Schniz

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Pull Request Overview

This PR reclassifies the installation method of fnm by removing it from the "Recommended" list and placing it under "Community."

• Removed the "recommended": true flag from the fnm configuration in constants.json.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.36%. Comparing base (663fad9) to head (e7fe0d0).
Report is 5 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7769      +/-   ##
==========================================
+ Coverage   75.09%   75.36%   +0.26%     
==========================================
  Files          98       96       -2     
  Lines        7914     7858      -56     
  Branches      196      192       -4     
==========================================
- Hits         5943     5922      -21     
+ Misses       1970     1935      -35     
  Partials        1        1              

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[MattIPv4]

👀 Could I suggest that we just remove the broken Windows option, instead of downgrading fnm across all platforms? I see no reason for us to keep the Windows instructions, recommended or not, when they're broken, but the macOS/Linux instructions seem perfectly fine to continue recommending?

[avivkeller]

Done. No snippets need to be changed as the Windows version uses the same snippet (with an if condition, which I think it's fine to keep for if/when we re-add fnm).

[github-actions]

Lighthouse Results

URL	Performance	Accessibility	Best Practices	SEO	Report
/en	🟢 99	🟢 100	🟢 100	🟢 91	🔗
/en/about	🟢 100	🟢 100	🟢 100	🟠 82	🔗
/en/about/previous-releases	🟢 98	🟢 100	🟢 100	🟠 83	🔗
/en/download	🟢 98	🟢 100	🟢 96	🟢 91	🔗
/en/blog	🟢 100	🟢 100	🟢 96	🟢 92	🔗