Add paper Table 2 QM9/MP20 ablation checkpoint

Non-production paper artifact for Table 2: QM9 + MP20 unconditional without force conditioning. Embedded current_epoch=9925, global_step=119112. SHA-256: 412e14210ffe4bb7d50d87c64bdea658a767238ea87f56888dd6c06734d02e55.

zatom2-table2-ablation-qm9-mp20-unconditional-without-force-conditioning-epoch9925.ckpt

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:412e14210ffe4bb7d50d87c64bdea658a767238ea87f56888dd6c06734d02e55
+size 2240024773