Fix some zap bugs

src/app/components/InfoZapperError.svelte

@@ -0,0 +1,36 @@
+<script lang="ts">
+  import {deriveZapperForPubkey} from "@welshman/app"
+  import Icon from "@lib/components/Icon.svelte"
+  import Button from "@lib/components/Button.svelte"
+  import ModalHeader from "@lib/components/ModalHeader.svelte"
+  import ModalFooter from "@lib/components/ModalFooter.svelte"
+  import ProfileLink from "@app/components/ProfileLink.svelte"
+
+  const {pubkey} = $props()
+
+  const zapper = deriveZapperForPubkey(pubkey)
+
+  const back = () => history.back()
+</script>
+
+<div class="column gap-4">
+  <ModalHeader>
+    {#snippet title()}
+      <div>Unable to Zap</div>
+    {/snippet}
+  </ModalHeader>
+  <p>
+    Zapping <ProfileLink {pubkey} class="!text-primary" /> isn't possible right now because
+    {#if $zapper}
+      their zap receiver isn't correctly set up.
+    {:else}
+      they don't currently have a zap receiver set up.
+    {/if}
+  </p>
+  <ModalFooter>
+    <Button class="btn btn-link" onclick={back}>
+      <Icon icon="alt-arrow-left" />
+      Go back
+    </Button>
+  </ModalFooter>
+</div>