Optimize Performance with Caching for Resolved Options and Parsed Locale Strings

[nodify-at]

Changes

• Caching: Implemented caching to avoid redundant computations of resolved options and locale parsing.
• Efficient Checks: Introduced a final isEnglish variable to efficiently determine if the locale supports English.
• Initialization: supportsFastNumbers is now immediately initialized to prevent unnecessary calls.

Performance Impact

Tests indicate up to a 10x speed improvement with these enhancements.

Issue Fixed

Fixes #1428