Buckingham VSite handler tries to get parameters by SMIRKS

[lilyminium]

Description

Probably not a common scenario, but smee tests have uncovered that the Buckingham VSite handler still tries to get parameters by SMIRKS only, which is no longer supported.

openff-interchange/plugins/nonbonded_plugins/virtual_sites.py

Lines 78 to 80 in 7efc15d

	# TODO: This logic assumes no spaces in the SMIRKS pattern, name or `match` attribute
	smirks, _, _ = potential_key.id.split(" ")
	parameter = parameter_handler.parameters[smirks]

Reproduction

Please include a minimally reproducing example of this bug.

See CI here: https://github.com/openforcefield/smee/actions/runs/22615205684/job/65526240736?pr=140

Output

Please include the output, including full tracebacks of any errors, resulting from the reproduction.

Software versions

• Which operating system and version are you using?
• How did you install Interchange?
• What is the output of running conda list?