Fix the math parser's implicit multiplication precedence and other regressions from the rewrite (#4383)

* Fix parsing regressions, make parsing 2.5x faster than the old pest parser, and clean up the math-parser rewrite

* Fix review findings: whitespace-juxtaposed numbers, mixed real/complex logic, correctly rounded literals, unified NaN truthiness, and gcd/lcm range checks

libraries/math-parser/Cargo.toml

@@ -9,7 +9,6 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 thiserror = "2.0"
-lazy_static = "1.5"
 num-complex = "0.4"
 chumsky = { version = "0.10", default-features = false, features = ["std"] }