8026161: Don't narrow floating-point literals in the lexer
Reviewed-by: hannesw, jlaskey
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TypeError:1:read property "foo" from undefined
TypeError:1:read property "foo" from undefined
TypeError:1:read property "foo" from undefined
TypeError:1:read property "foo" from undefined
TypeError:1:read property "foo" from undefined
TypeError:1:read property "foo" from undefined