bracketing methods with CommonSolve interface

the CommonSolve interface mentions:
> The problem-algorithm-solve interface is a pattern popularized in Julia by the DifferentialEquations.jl suite of packages. This can be used as an alternative to find_zero. Unlike find_zero, solve will return NaN on non-convergence.

But, for bracketing methods, the function `Roots.assert_bracket` throws:
https://github.com/JuliaMath/Roots.jl/blob/18354b00d1796af86f760943476471d4afe67f56/src/Bracketing/bracketing.jl#L52

The error path for `assert_bracket`. also gets activated when one of the values is NaN, instead of returning NaN.