Changed the default account balance to the testnet genesis default

This is the same value as substrate-contracts-node/node/src/chain_spec.rs `test_genesis` function

crates/env/src/engine/off_chain/test_api.rs

@@ -316,24 +316,24 @@ where
         instance.engine.set_callee(encoded_alice.clone());
 
         // set up the funds for the default accounts
-        let substantial = 1_000_000;
-        let some = 1_000;
-        instance.engine.set_balance(encoded_alice, substantial);
+        // this is the same as substrate-contracts-node/node/src/chain_spec.rs `test_genesis` function.
+        let value = (1 << 60);
+        instance.engine.set_balance(encoded_alice, value);
         instance
             .engine
-            .set_balance(scale::Encode::encode(&default_accounts.bob), some);
+            .set_balance(scale::Encode::encode(&default_accounts.bob), value);
         instance
             .engine
-            .set_balance(scale::Encode::encode(&default_accounts.charlie), some);
+            .set_balance(scale::Encode::encode(&default_accounts.charlie), value);
         instance
             .engine
-            .set_balance(scale::Encode::encode(&default_accounts.django), 0);
+            .set_balance(scale::Encode::encode(&default_accounts.django), value);
         instance
             .engine
-            .set_balance(scale::Encode::encode(&default_accounts.eve), 0);
+            .set_balance(scale::Encode::encode(&default_accounts.eve), value);
         instance
             .engine
-            .set_balance(scale::Encode::encode(&default_accounts.frank), 0);
+            .set_balance(scale::Encode::encode(&default_accounts.frank), value);
     });
     f(default_accounts)
 }