fix: remove developer emails from license headers (#3927)

[7amed3li]

Summary

This PR addresses the security issue reported in #3927 by removing all personal email addresses from source file headers while preserving contributor attributions.

Problem

Security scanners flag exposed developer email addresses in distribution files as a privacy vulnerability (CWE-200: Information Exposure). The current build includes personal emails in @license headers across all dist/ output files.

Solution

Removed email addresses from 13 source files while maintaining:

• All contributor names and dates
• GitHub profile/repository links
• Complete MIT License text
• Original file formatting (Unix LF line endings)

Changes

Category	Files
License	src/license.js
Libraries	src/libs/rgbcolor.js, omggif.js, WebPDecoder.js
Modules	annotations.js, canvas.js, cell.js, context2d.js, fileloading.js, javascript.js, outline.js, total_pages.js, xmp_metadata.js

Verification

# Before: 15+ email matches
grep -rE "[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}" dist/

# After: Zero matches ✓
grep -rE "[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}" dist/

[7amed3li]

"Hi @MrRio, I've submitted this PR to resolve the security disclosure issue mentioned in #3927. It's a non-breaking change that only updates license headers. Looking forward to your feedback."