tapdb: fix passive asset re-anchoring

When re-anchoring a passive asset, we need to reset any time locks it
previously had on it. Because the re-anchoring is a normal transfer with
just a simple signature, we need to clear any previous restrictions.
The ReAnchorPassiveAssets query basically needs to mirror what the
asset.CopySpendTemplate() method does.

Author: guggero

tapdb/assets_store.go

@@ -2288,7 +2288,6 @@ func (a *AssetStore) queryCommitments(ctx context.Context,
 		map[wire.OutPoint]*commitment.TapCommitment,
 	)
 	for anchorPoint := range chainAnchorToAssets {
-		anchorPoint := anchorPoint
 		anchorUTXO := anchorPoints[anchorPoint]
 		anchoredAssets := chainAnchorToAssets[anchorPoint]
 		anchoredAltLeaves := anchorAltLeaves[anchorPoint]

tapdb/sqlc/queries/transfers.sql

@@ -137,8 +137,12 @@ RETURNING asset_id;
 -- name: ReAnchorPassiveAssets :exec
 UPDATE assets
 SET anchor_utxo_id = @new_anchor_utxo_id,
+    -- The following fields need to be the same fields we reset in
+    -- Asset.CopySpendTemplate.
     split_commitment_root_hash = NULL,
-    split_commitment_root_value = NULL
+    split_commitment_root_value = NULL,
+    lock_time = 0,
+    relative_lock_time = 0
 WHERE asset_id = @asset_id;
 
 -- name: DeleteAssetWitnesses :exec