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fix(compiler): print numbers like JS String(number) (#4324)

format_number saturated whole numbers at i64::MAX (`{1e21}` gave
`9223372036854775807`) and never used exponent form, where Babel prints
`1e+21` / `1e-7`. Port JS Number::toString: shortest round-trip digits
from Rust's `{:e}`, laid out with the ECMA-262 rules (exponent form when
the decimal exponent is >= 21 or <= -7, `e+N` / `e-N`; NaN, Infinity,
-Infinity; -0 prints "0").

The child static-value path also folds `-`, `*` and `/` on numbers, as
the attribute evaluator does, so `<div>{1 / 0}</div>` inlines
`Infinity` instead of inserting `1 / 0` at runtime.

Fixes #4322


Claude-Session: https://claude.ai/code/session_015hPxMkC3jg3Uivh65gvaf2

Co-authored-by: Claude <noreply@anthropic.com>

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