Merge pull request #32678 from storybookjs/valentin/fix-sb-mock-on-subpath-deployed-storybooks

Mocking: Fix `sb.mock` usage in Storybook's deployed in subpaths
(cherry picked from commit 25af7cd)

Author: valentinpalkovic

code/core/src/core-server/presets/vitePlugins/vite-inject-mocker/plugin.ts

@@ -8,7 +8,7 @@ import type { ResolvedConfig, ViteDevServer } from 'vite';
 const entryPath = '/vite-inject-mocker-entry.js';
 
 const entryCode = dedent`
-    <script type="module" src="${entryPath}"></script>
+    <script type="module" src=".${entryPath}"></script>
   `;
 
 let server: ViteDevServer;