chore: Disable deployment for i18n branch (#12166)

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<!-- start pr-codex -->

---

## PR-Codex overview
This PR introduces a new `git` configuration to the `vercel.json` files
in both the `apps/web` and `apps/solana` directories, specifically
enabling or disabling deployment options for the `l10n_develop`
environment.

### Detailed summary
- In `apps/web/vercel.json`:
- Added `git` configuration with `deploymentEnabled` for `l10n_develop`
set to `false`.
  
- In `apps/solana/vercel.json`:
  - Added a `$schema` reference.
- Included `git` configuration with `deploymentEnabled` for
`l10n_develop` set to `false`.

> ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your
question}`

<!-- end pr-codex -->

Author: chefjackson

apps/solana/vercel.json

@@ -0,0 +1,8 @@
+{
+  "$schema": "https://openapi.vercel.sh/vercel.json",
+  "git": {
+    "deploymentEnabled": {
+      "l10n_develop": false
+    }
+  }
+}

apps/web/vercel.json

@@ -5,5 +5,10 @@
       "path": "/api/burn-statistics/update",
       "schedule": "30 2 * * 2"
     }
-  ]
+  ],
+  "git": {
+    "deploymentEnabled": {
+      "l10n_develop": false
+    }
+  }
 }