iPad docs: add copy & paste known issue

[bpmct]

documents #3491

[codecov]

Codecov Report

Merging #4254 (92aaf32) into main (1b80244) will decrease coverage by 0.23%.
The diff coverage is n/a.

❗ Current head 92aaf32 differs from pull request most recent head 876d027. Consider uploading reports for the commit 876d027 to get more accurate results

@@            Coverage Diff             @@
##             main    #4254      +/-   ##
==========================================
- Coverage   65.32%   65.09%   -0.24%     
==========================================
  Files          36       36              
  Lines        1883     1882       -1     
  Branches      380      380              
==========================================
- Hits         1230     1225       -5     
- Misses        555      559       +4     
  Partials       98       98              

Impacted Files	Coverage Δ
src/node/util.ts	81.72% <0.00%> (-1.53%)	⬇️
src/node/cli.ts	80.99% <0.00%> (-0.49%)	⬇️

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[github-actions]

✨ Coder.com for PR #4254 deployed! It will be updated on every commit.

• Host: https://codercom-ro54o3vpq-codercom.vercel.app/docs/code-server
• Last deploy status: success
• Commit: 876d027
• Workflow status: https://github.com/cdr/code-server/actions/runs/1288727288

[jsjoeio]

Thanks Ben! 🎉