ln_framework: fix CLN channel open push amount

push_msat is in millisatoshis, but was given the channel's push amount,
which is in satoshis, so CLN pushed 1000x less than intended.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: pinheadmz

resources/scenarios/ln_framework/ln.py

@@ -259,7 +259,7 @@ def connect(self, target_uri) -> dict:
     def channel(self, pk, capacity, push_amt, fee_rate) -> dict:
         data = {
             "amount": capacity,
-            "push_msat": push_amt,
+            "push_msat": push_amt * 1000,
             "id": pk,
             # A feerate without a unit suffix is interpreted as sat/kvB
             "feerate": f"{fee_rate * 1000}perkb",