Fix iframe height update on slow connection

[akellbl4]

Resolves #1340

Update the iframe's height when the image from a comment is loaded.

[codecov]

Codecov Report

Merging #1407 (88514e5) into master (9971698) will decrease coverage by 0.06%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #1407      +/-   ##
==========================================
- Coverage   57.88%   57.82%   -0.07%     
==========================================
  Files         130      130              
  Lines        2885     2888       +3     
  Branches      741      742       +1     
==========================================
  Hits         1670     1670              
- Misses       1211     1214       +3     
  Partials        4        4              

Impacted Files	Coverage Δ
frontend/app/components/root/root.tsx	0.00% <0.00%> (ø)

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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%)	355 ms (+151.17% 🔺)	396 ms
public/remark.mjs	70.86 KB (+0.06% 🔺)	1.5 s (+0.06% 🔺)	801 ms (-3.52% 🔽)	2.3 s
public/remark.css	8.2 KB (0%)	165 ms (0%)	0 ms (+100% 🔺)	165 ms
public/last-comments.mjs	35.62 KB (0%)	713 ms (0%)	741 ms (+43.32% 🔺)	1.5 s
public/last-comments.css	3.79 KB (0%)	76 ms (0%)	0 ms (+100% 🔺)	76 ms
public/deleteme.mjs	10.01 KB (0%)	201 ms (0%)	339 ms (-25.92% 🔽)	539 ms
public/counter.mjs	749 B (0%)	15 ms (0%)	506 ms (+52.81% 🔺)	521 ms