Enforce order in which modules are dealt with in _do_on_generic_first_appt

[marghe-molaro]

Quick PR to ensure we can specify in which order modules are dealt with in _do_on_generic_first_appt. This will have to be changed manually, and will only be used for testing (will not be merged in master).
@matt-graham could you just double check this looks all right to you?

[matt-graham]

This looks correct to me - you could do the filtering and ordering a bit more directly as suggested below, but I think what you have written is equivalent to this so no need to change this if the plan is just to keep this for testing and not merge.

[matt-graham]

Suggested change

	modules: OrderedDict[str, "Module"] = fixed_modules_order #self.sim.modules
	filtered_modules = [item for item in modules if item in self.sim.modules]
	symptoms = self.sim.modules["SymptomManager"].has_what(self.target)
	filtered_and_sorted_modules = [
	self.sim.modules[name] for name in fixed_modules_order if name in self.sim.modules
	]
	symptoms = self.sim.modules["SymptomManager"].has_what(self.target)

[matt-graham]

Suggested change

	for name in filtered_modules:
	module = self.sim.modules[name]
	for module in filtered_and_sorted_modules:

[marghe-molaro]

Thank you @matt-graham - jobs submitted, nothing left to do but keep our fingers crossed!

[marghe-molaro]

Results of this PR were included in last comment to PR #1389. Order was confirmed to have no significant effect on outputs.