fix: NaN valueAsNumber Safari error

[luwes]

fix #947

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
media-chrome	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 10, 2024 7:35pm

[codecov]

Codecov Report

Attention: Patch coverage is 37.50000% with 5 lines in your changes missing coverage. Please review.

Project coverage is 79.00%. Comparing base (3ea80df) to head (116fb9f).
Report is 95 commits behind head on main.

Files with missing lines	Patch %	Lines
src/js/media-time-range.ts	20.00%	4 Missing ⚠️
src/js/media-volume-range.ts	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #967      +/-   ##
==========================================
+ Coverage   78.55%   79.00%   +0.45%     
==========================================
  Files          59       50       -9     
  Lines       11080    12057     +977     
  Branches        0      765     +765     
==========================================
+ Hits         8704     9526     +822     
- Misses       2376     2531     +155     

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[AdamJaggard]

Good catch