fix copy for latest safari

[akellbl4]

Resolves #1312

• updates typescript in order to have access to modern Clipboard API
• modern browsers dropped ability to copy formatter text, that led to disabling this feature. now it's only simple text
• fix for ts-ignore is needed, should be resolved in separate PR

[codecov]

Codecov Report

Merging #1320 (5222286) into master (000d64d) will increase coverage by 0.75%.
The diff coverage is 58.33%.

@@            Coverage Diff             @@
##           master    #1320      +/-   ##
==========================================
+ Coverage   49.27%   50.03%   +0.75%     
==========================================
  Files         137      137              
  Lines        3042     3046       +4     
  Branches      693      695       +2     
==========================================
+ Hits         1499     1524      +25     
+ Misses       1527     1506      -21     
  Partials       16       16              

Impacted Files	Coverage Δ
...ribe-by-email/comment-form__subscribe-by-email.tsx	90.51% <ø> (ø)
...ntend/app/components/comment-form/comment-form.tsx	49.28% <ø> (ø)
frontend/app/components/comment/comment.tsx	65.09% <16.66%> (-0.42%)	⬇️
frontend/app/common/copy.ts	96.29% <100.00%> (+92.29%)	⬆️

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[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
public/embed.mjs	2.02 KB (0%)	41 ms (0%)	124 ms (-39.01% 🔽)	164 ms
public/remark.mjs	66.02 KB (+0.14% 🔺)	1.4 s (+0.14% 🔺)	337 ms (+39.16% 🔺)	1.7 s
public/remark.css	8.26 KB (0%)	166 ms (0%)	0 ms (+100% 🔺)	166 ms
public/last-comments.mjs	31.07 KB (+0.35% 🔺)	622 ms (+0.35% 🔺)	142 ms (-30.81% 🔽)	763 ms
public/deleteme.mjs	9.92 KB (0%)	199 ms (0%)	158 ms (+84.27% 🔺)	357 ms
public/counter.mjs	749 B (0%)	15 ms (0%)	190 ms (+55.23% 🔺)	204 ms

[akellbl4]

@Mavrin I tried to provide some tests for copy function but they are really far from ideal. If you know a better way for testing clipboard I would appreciate any suggestions.
As far as I know the best way is to test it in headless browser.

[umputun]

conflict