close: Print multiple txs; Fixes #6467

Changelog-Changed: `close` now outputs txs & txids of all closing transactions (splice candidates can cause there to be multiple).

.msggen.json

@@ -785,6 +785,8 @@
         "CloseResponse": {
             "Close.tx": 2,
             "Close.txid": 3,
+            "Close.txids[]": 5,
+            "Close.txs[]": 4,
             "Close.type": 1
         },
         "ConnectAddress": {
@@ -4093,10 +4095,18 @@
         },
         "Close.tx": {
             "added": "pre-v0.10.1",
-            "deprecated": null
+            "deprecated": "v24.11"
         },
         "Close.txid": {
             "added": "pre-v0.10.1",
+            "deprecated": "v24.11"
+        },
+        "Close.txids[]": {
+            "added": "v24.11",
+            "deprecated": null
+        },
+        "Close.txs[]": {
+            "added": "v24.11",
             "deprecated": null
         },
         "Close.type": {