Delete old solver on multiple calls to loadJson

[K20shores]

When we load a mechanism with loadJson

music-box/src/acom_music_box/music_box.py

Lines 204 to 216 in 3b79d68

	self.solver = musica.MICM(config_path=camp_path, solver_type=musica.SolverType.rosenbrock_standard_order)
	elif "mechanism" in data and data["mechanism"]:
	# V1 mechanism configuration (in the same file)
	mechanism_json = data['mechanism']
	with tempfile.NamedTemporaryFile(mode='w', suffix='.json', delete=False) as tmp_mech_file:
	tmp_mech_file.write(json.dumps(mechanism_json))
	tmp_mech_file.flush()
	tmp_mech_file_path = tmp_mech_file.name
	# Save mechanism
	parser = mc.Parser()
	self.__mechanism = parser.parse(tmp_mech_file_path)
	# Initalize the musica solver
	self.solver = musica.MICM(config_path=tmp_mech_file_path, solver_type=musica.SolverType.rosenbrock_standard_order)

We directly assign to self.solver. If a solver already exists there, we may be leaking memory. Make sure that somehow those old solvers and their data get deleted

Acceptance criteria

• Make sure the __del__ option gets called on the solver

Ideas

[github-actions]

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