docs: tidy up website tooling and repo config

[vdusek]

Website tooling and repo config cleanup, same as apify-sdk-python#1181 and apify-client-python#1126.

• Website code is linted with type-aware oxlint (new website/tsconfig.json), and warnings fail CI. Fixed the few issues it found.
• Patches moved from patch-package to pnpm patchedDependencies, deduplicating the @docusaurus/core patch.
• Removed unused website deps and aligned version ranges with the lockfile.
• YAML: 2-space indent, no quotes unless needed, double quotes when they are.
• markdownlint: default 2-space list indent (as in apify-docs) and fenced code blocks only.
• Fixed the .editorconfig YAML glob.

✍️ Drafted by Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.12%. Comparing base (680c7ef) to head (f695e38).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2327      +/-   ##
==========================================
- Coverage   94.15%   94.12%   -0.03%     
==========================================
  Files         184      184              
  Lines       13644    13644              
==========================================
- Hits        12846    12842       -4     
- Misses        798      802       +4     

Flag	Coverage Δ
unit	94.12% <ø> (-0.03%)	⬇️

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[apify-approval-mirror]

Mirroring approval from @Mantisus.