tests: fix tx output asset/value commitments in liquid txs

An upcoming change will force the asset and value in trusted_commitments
(if provided) to match with the values present in the transaction
outputs.

This change is intended to ensure that we do not mutate the
transaction/sign a differently blinded version of it that the caller did
not intend.

Fix test cases where the transaction and commitment data are inconsistent.

Author: jgriffiths

test_data/liquid_txn_ae.json

@@ -1,7 +1,7 @@
 {
   "input": {
     "network": "localtest-liquid",
-    "txn": "0200000000012413047d152348db4342763a0eece0d99e6e2983b3b46eda07ede58d28f201ad0100000000ffffffff020a2b712848b6f14697590b06622266e8d82cb06030896de79700b15562a20834fb0881e4ace4be80524bcc4f566e46a452ab5f43a49929cbf5743d9e1de879a478a7033fc2cd1c4ce77e4339984f786dba6591bd862cf397e8cb6a99e457e162cad68617a9142e0ef2990318d8c9f7cee627650ba2a84fdda449870125b251070e29ca19043cf33ccd7324e2ddab03ecc4ae0b5e77c4fc0e5cf6c95a0100000000000f4240000000000000",
+    "txn": "0200000000012413047d152348db4342763a0eece0d99e6e2983b3b46eda07ede58d28f201ad0100000000ffffffff020abd23178d9ff73cf848d8d88a7c7e269a464f53017cab0f9f53ed9d64b2849713094d9a00f1661a2a805a8afec9c188310d4c43353cc319886ee4d9f439389d8f43033fc2cd1c4ce77e4339984f786dba6591bd862cf397e8cb6a99e457e162cad68617a9142e0ef2990318d8c9f7cee627650ba2a84fdda449870125b251070e29ca19043cf33ccd7324e2ddab03ecc4ae0b5e77c4fc0e5cf6c95a0100000000000f4240000000000000",
     "trusted_commitments": [
       {
         "vbf": "6ec064a68075a278bfca4a10f777c730116e9ba02fbb343a237c847e4d2fbf53",

test_data/liquid_txn_asset_ae.json

@@ -2,7 +2,7 @@
   "input": {
     "network": "localtest-liquid",
     "use_ae_signatures": true,
-    "txn": "0200000000012413047d152348db4342763a0eece0d99e6e2983b3b46eda07ede58d28f201ad0100000000ffffffff020a2b712848b6f14697590b06622266e8d82cb06030896de79700b15562a20834fb0881e4ace4be80524bcc4f566e46a452ab5f43a49929cbf5743d9e1de879a478a7033fc2cd1c4ce77e4339984f786dba6591bd862cf397e8cb6a99e457e162cad68617a9142e0ef2990318d8c9f7cee627650ba2a84fdda449870125b251070e29ca19043cf33ccd7324e2ddab03ecc4ae0b5e77c4fc0e5cf6c95a0100000000000f4240000000000000",
+    "txn": "0200000000012413047d152348db4342763a0eece0d99e6e2983b3b46eda07ede58d28f201ad0100000000ffffffff020abd23178d9ff73cf848d8d88a7c7e269a464f53017cab0f9f53ed9d64b2849713094d9a00f1661a2a805a8afec9c188310d4c43353cc319886ee4d9f439389d8f43033fc2cd1c4ce77e4339984f786dba6591bd862cf397e8cb6a99e457e162cad68617a9142e0ef2990318d8c9f7cee627650ba2a84fdda449870125b251070e29ca19043cf33ccd7324e2ddab03ecc4ae0b5e77c4fc0e5cf6c95a0100000000000f4240000000000000",
     "trusted_commitments": [
       {
         "vbf": "6ec064a68075a278bfca4a10f777c730116e9ba02fbb343a237c847e4d2fbf53",