Dev bundle should not minify

[birkskyum]

Pointed out here, we're missing a flag that makes only the prod build minified.

a3f67eb#diff-1925b6790595de2a8e9305249f59ea6cc5eb109c15c6013ae09de2f30132cc7aL34

Currently, we minify the dev build as well.

maplibre-gl-js/build/rollup_plugins.ts

Lines 34 to 40 in 6eeafe9

	terser({
	compress: {
	pure_getters: true,
	passes: 3
	},
	sourceMap: true
	}),

cc @NathanMOlson

Launch Checklist

• Confirm your changes do not include backports from Mapbox projects (unless with compliant license) - if you are not sure about this, please ask!

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.27%. Comparing base (6eeafe9) to head (4015d64).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4989      +/-   ##
==========================================
- Coverage   90.47%   89.27%   -1.20%     
==========================================
  Files         267      267              
  Lines       38206    38206              
  Branches     3141     2318     -823     
==========================================
- Hits        34566    34109     -457     
- Misses       2710     3101     +391     
- Partials      930      996      +66     

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