fix(docs): update SvelteKit tutorial to use Svelte 5 syntax (#31229)

* docs: Update SvelteKit auth tutorial project creation syntax (#31114)

* docs: Update link to SvelteKit docs (#31114)

* Update +layout.svelte to Svelte 5 syntax (#31114)

* Update +page.svelte to use Svelte 5 syntax (#31114)

* Update account +page.svelte to use Svelte 5 syntax (#31114)

* Update account Avatar.svelte to use Svelte 5 syntax (#31114)

* Update SvelteKit example to Svelte 5 syntax (#31114)

* docs: Update npm dependencies (#31114)

* Start review

* Finish review

* Update code for SvelteKit 5

* Convert to codesamples

---------

Co-authored-by: Chris Chinchilla <chris@chrischinchilla.com>
Co-authored-by: Chris Chinchilla <chris.ward@supabase.io>

package.json

@@ -29,7 +29,6 @@
     "test:ui-patterns": "turbo run test --filter=ui-patterns",
     "test:studio": "turbo run test --filter=studio",
     "test:studio:watch": "turbo run test --filter=studio -- watch",
-
     "e2e": "pnpm --prefix e2e/studio run e2e",
     "e2e:dev-hosted": "pnpm --prefix e2e/studio run e2e:dev-hosted",
     "e2e:dev-selfhosted": "pnpm --prefix e2e/studio run e2e:dev-selfhosted",
@@ -39,7 +38,6 @@
     "e2e:ci": "pnpm --prefix e2e/studio run e2e:ci",
     "e2e:supabase:start": "pnpm --prefix e2e/studio run supabase:start",
     "e2e:supabase:stop": "pnpm --prefix e2e/studio run supabase:stop",
-
     "perf:kong": "ab -t 5 -c 20 -T application/json http://localhost:8000/",
     "perf:meta": "ab -t 5 -c 20 -T application/json http://localhost:5555/tables",
     "setup:cli": "supabase start -x studio && supabase status --output json > keys.json && node scripts/generateLocalEnv.js",
@@ -72,12 +70,21 @@
       "esbuild": "^0.25.2",
       "@redocly/respect-core>form-data": "^4.0.4"
     },
-    "neverBuiltDependencies": ["libpg-query"]
+    "neverBuiltDependencies": [
+      "libpg-query"
+    ]
   },
   "engines": {
     "pnpm": ">=9",
     "node": ">=22"
   },
-  "keywords": ["postgres", "firebase", "storage", "functions", "database", "auth"],
+  "keywords": [
+    "postgres",
+    "firebase",
+    "storage",
+    "functions",
+    "database",
+    "auth"
+  ],
   "packageManager": "pnpm@9.15.5"
-}
+}