fix: update isBrowser check

[stepankuzmin]

Update isBrowser check to support Electron environment

Closes #307 #371

[codecov]

Codecov Report

Merging #387 (9c38124) into main (1adf9a6) will decrease coverage by 0.37%.
The diff coverage is 81.25%.

@@            Coverage Diff             @@
##             main     #387      +/-   ##
==========================================
- Coverage   98.34%   97.96%   -0.38%     
==========================================
  Files          26       28       +2     
  Lines         725      738      +13     
  Branches      180      189       +9     
==========================================
+ Hits          713      723      +10     
- Misses          8       11       +3     
  Partials        4        4              

Impacted Files	Coverage Δ
src/utils/mapbox-gl.js	100.00% <ø> (ø)
src/utils/isElectron.js	72.72% <72.72%> (ø)
src/utils/isBrowser.js	100.00% <100.00%> (ø)

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[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
dist/react-map-gl.cjs.js	9.61 KB (+0.99% 🔺)	193 ms (+0.99% 🔺)	38 ms (+65.46% 🔺)	230 ms
dist/react-map-gl.esm.js	9.72 KB (+1.05% 🔺)	195 ms (+1.05% 🔺)	22 ms (-20.41% 🔽)	216 ms