GeezerVison

Fixes #1734

printNumericLiteral printed numbers with String(value). For integer values above Number.MAX_SAFE_INTEGER, String() rounds to 17 significant digits and has no point or exponent, so Lua 5.3+ reads it as an exact 64-bit integer with a different value:

const a = 4611686018427387904; // 2 ** 62
print(a === 2 ** 62);

local a = 4611686018427388000 -- integer, 96 more than 2^62
print(a == 2 ^ 62)            -- false

The printer now adds .0 when the value is an integer outside the safe range and the text has no exponent (4611686018427388000.0). Lua then reads it as a float, which rounds to the same double JS has. Values at or below 2^53 - 1 print as before, and values like 1e+21 already have an exponent, so no snapshots change. The fix is in the printer, so it also covers inlined const enum values and hex literals (0x4000000000000000).

Tests: added functional tests in test/unit/expressions.spec.ts (run on every Lua target except JIT) for decimal, negative and hex literals above 2^53, plus a const enum case. 17 fail before the change (5.3, 5.4, 5.5 and universal) and all pass after. npm test (lint + full jest run) passes.