Have a min_mass for HydrogenBondAnalysis.guess_hydrogens

[lilyminium]

Is your feature request related to a problem? Please describe.

HydrogenBondAnalysis.guess_hydrogens only looks for a maximum mass and minimum charge for hydrogen-like atoms.

mdanalysis/package/MDAnalysis/analysis/hydrogenbonds/hbond_analysis.py

Lines 268 to 274 in b5cb49f

	ag = self.u.select_atoms(selection)
	hydrogens_ag = ag[
	np.logical_and(
	ag.masses < max_mass,
	ag.charges > min_charge
	)
	]

However, we know that sometimes the mass guesser will give masses of 0.0 if it can't figure out what a particle is (#2348). This seems like it would lead to a fair few false positives.

Describe the solution you'd like
Have a min_mass keyword, or just don't choose atoms with a mass of 0.0

Describe alternatives you've considered
Making users validate the output of HydrogenBondAnalysis.guess_hydrogens themselves.

Additional context
Add any other context or screenshots about the feature request here.

[RMeli]

This looks dangerous indeed. This should be only a temporary solution and a long-term one would be to improve (fix?) the mass guesser (see Issue #2348).

I can implement this fix if no one else is working on it.