Fix some zap bugs

src/app/components/ChannelMessageZapButton.svelte

@@ -3,6 +3,7 @@
   import Button from "@lib/components/Button.svelte"
   import Icon from "@lib/components/Icon.svelte"
   import Zap from "@app/components/Zap.svelte"
+  import InfoZapperError from "@app/components/InfoZapperError.svelte"
   import WalletConnect from "@app/components/WalletConnect.svelte"
   import {pushModal} from "@app/modal"
   import {wallet} from "@app/state"
@@ -12,7 +13,9 @@
   const zapper = deriveZapperForPubkey(event.pubkey)
 
   const onClick = () => {
-    if ($wallet) {
+    if (!$zapper?.allowsNostr) {
+      pushModal(InfoZapperError, {url, pubkey: event.pubkey, eventId: event.id})
+    } else if ($wallet) {
       pushModal(Zap, {url, pubkey: event.pubkey, eventId: event.id})
     } else {
       pushModal(WalletConnect)
@@ -20,8 +23,6 @@
   }
 </script>
 
-{#if $zapper?.allowsNostr}
-  <Button onclick={onClick} class="btn join-item btn-xs">
-    <Icon icon="bolt" size={4} />
-  </Button>
-{/if}
+<Button onclick={onClick} class="btn join-item btn-xs">
+  <Icon icon="bolt" size={4} />
+</Button>