fix: add params module to pacific-1 genesis

The params module genesis was null, causing seid v6.4.1 to panic
during InitGenesis with "cosmos gas multiplier numerator can not be 0".
The zero-value CosmosGasParams fails validation in SetCosmosGasParams.

Populates the params module with on-chain values queried from a running
pacific-1 node:
- cosmosGasMultiplierNumerator: 1
- cosmosGasMultiplierDenominator: 1
- globalMinimumGasPrices: 0.02 usei

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: bdchatham

chains/pacific-1/genesis.json

@@ -2437,7 +2437,15 @@
         "aggregate_exchange_rate_votes": [],
         "price_snapshots": []
       },
-      "params": null,
+      "params": {
+        "feesParams": {
+          "globalMinimumGasPrices": [{"denom": "usei", "amount": "0.020000000000000000"}]
+        },
+        "cosmosGasParams": {
+          "cosmosGasMultiplierNumerator": "1",
+          "cosmosGasMultiplierDenominator": "1"
+        }
+      },
       "slashing": {
         "params": {
           "signed_blocks_window": "108000",