Ensure keyword and regexp flags are preserved across comments when lexing
object literals and division operators.

-- Testcase --
{%
	printf("%.J\n", [
		{ /* comment */ default: true },
		4 /* comment */ /2/1
	]);
%}
-- End --

-- Expect stdout --
[
	{
		"default": true
	},
	2
]
-- End --
