pack: correct Numismatics coin IDs (5 denominations, not 4)

The 0.18.0 economy_policy.js named 'numismatics:sundial' which doesn't
exist -- the real registry IDs are spur, bevel, cog, crown, sun. The
KubeJS warning surfaced this at startup:

  Failed to read ingredient from numismatics:sundial:
  Item with ID numismatics:sundial does not exist!

Updates both economy_policy.js (recipe removal) and jei_hides.js (JEI
hide) to use the correct 5-denomination list. Bumps to 0.18.1.

pack/overrides/kubejs/server_scripts/economy_policy.js

@@ -14,11 +14,13 @@ ServerEvents.recipes(event => {
     // recovery happens via OP /give or future bank vendor.
     event.remove({ mod: 'waystones' });
 
-    // Block coin manufacturing only -- 4 denominations.
+    // Block coin manufacturing only -- 5 denominations.
+    // Real registry IDs: spur, bevel, cog, crown, sun.
     [
         'numismatics:spur',
         'numismatics:bevel',
-        'numismatics:sundial',
+        'numismatics:cog',
+        'numismatics:crown',
         'numismatics:sun',
     ].forEach(coin => event.remove({ output: coin }));
 });