[APP-2469] Remove duplicate font files to reduce plugin size

[rami-elementor]

✨ PR Description

Purpose: Optimize plugin build size by excluding font files from webpack bundling and moving them to direct CSS references in production assets.

Main changes:

• Removed fonts entry point from webpack configuration to prevent bundling font files into build output
• Updated widget module to load fonts.css directly from assets/css instead of webpack build directory
• Renamed global admin style handle from 'ea11y-global-style' to 'ea11y-global-admin-style' for better clarity

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