fix(dashboard): minor collection bugs (#9255)

**What**
- toast on create
- fix delete prompt message
- fix 404 on delete

---

FIXES CC-508

packages/admin/dashboard/src/i18n/translations/en.json

@@ -612,6 +612,7 @@
     "subtitle": "Organize products into collections.",
     "createCollection": "Create Collection",
     "createCollectionHint": "Create a new collection to organize your products.",
+    "createSuccess": "Collection created successfully.",
     "editCollection": "Edit Collection",
     "handleTooltip": "The handle is used to reference the collection in your storefront. If not specified, the handle will be generated from the collection title.",
     "deleteWarning": "You are about to delete the collection {{title}}. This action cannot be undone.",

packages/admin/dashboard/src/routes/collections/collection-create/components/create-collection-form/create-collection-form.tsx

@@ -1,5 +1,5 @@
 import { zodResolver } from "@hookform/resolvers/zod"
-import { Button, Heading, Input, Text } from "@medusajs/ui"
+import { Button, Heading, Input, Text, toast } from "@medusajs/ui"
 import { useForm } from "react-hook-form"
 import { useTranslation } from "react-i18next"
 import * as zod from "zod"
@@ -35,6 +35,10 @@ export const CreateCollectionForm = () => {
     await mutateAsync(data, {
       onSuccess: ({ collection }) => {
         handleSuccess(`/collections/${collection.id}`)
+        toast.success(t("general.success"), {
+          description: t("collections.createSuccess"),
+          dismissLabel: t("actions.close"),
+        })
       },
     })
   })

packages/admin/dashboard/src/routes/collections/collection-detail/components/collection-general-section/collection-general-section.tsx

@@ -4,6 +4,7 @@ import { Container, Heading, Text, usePrompt } from "@medusajs/ui"
 import { useTranslation } from "react-i18next"
 import { ActionMenu } from "../../../../../components/common/action-menu"
 import { useDeleteCollection } from "../../../../../hooks/api/collections"
+import { useNavigate } from "react-router-dom"
 
 type CollectionGeneralSectionProps = {
   collection: HttpTypes.AdminCollection
@@ -14,6 +15,7 @@ export const CollectionGeneralSection = ({
 }: CollectionGeneralSectionProps) => {
   const { t } = useTranslation()
   const prompt = usePrompt()
+  const navigate = useNavigate()
 
   const { mutateAsync } = useDeleteCollection(collection.id!)
 
@@ -22,6 +24,7 @@ export const CollectionGeneralSection = ({
       title: t("general.areYouSure"),
       description: t("collections.deleteWarning", {
         count: 1,
+        title: collection.title,
       }),
     })
 
@@ -30,6 +33,7 @@ export const CollectionGeneralSection = ({
     }
 
     await mutateAsync()
+    navigate("../", { replace: true })
   }
 
   return (