fix: mock api server enabled in production build masks real error/loading ux

## Description

`vitePluginFakeServer` is configured with `enableProd: true`, so mock endpoints can be active in production. This can cause the UI to always receive successful mocked data, hiding real backend latency/failures and preventing users from seeing real loading, empty, and error states. It also risks shipping stale/fake data paths.

**Severity**: `high`
**File**: `amoro-web/vite.config.ts`

## Expected Behavior

The code should handle this case properly to avoid unexpected errors or degraded quality.

Start in amoro-web/vite.config.ts and inspect the vitePluginFakeServer configuration, especially enableProd. Verify the production build no longer activates mock endpoints, then check the resulting build or available frontend checks to confirm real loading, empty, and error states are not masked.

Written by the indexing model from the issue text.