Repository: storybook
Issue: [Bug]: Docs pages failing to load due to an intermittent Vite error?
Labels: bug,needs triage

### Describe the bug

My docs pages (.mdx files) fail to load, apparently because something is referencing a chunk that doesn't exist on disk.

The error I see is that the docs file failed to load, with a message of

```
Failed to fetch dynamically imported module: http://localhost:6006/src/stories/Overview.mdx
```

<img width="988" alt="Screenshot 2024-08-27 at 12 11 08 PM" src="https://github.com/user-attachments/assets/9c8dea71-973d-444b-8881-524094c61b05">

And on the console there are errors from Vite:

```
Sourcemap for "/virtual:/@storybook/builder-vite/setup-addons.js" points to missing source files
Sourcemap for "/virtual:/@storybook/builder-vite/vite-app.js" points to missing source files
12:08:58 PM [vite] ✨ new dependencies optimized: @storybook/web-components
12:08:58 PM [vite] ✨ optimized dependencies changed. reloading
12:08:59 PM [vite] ✨ new dependencies optimized: @storybook/blocks
12:08:59 PM [vite] ✨ optimized dependencies changed. reloading
The file does not exist at "/Users/justin/Projects/Lit/inspector-elements/node_modules/.cache/storybook/1c3385a5d25e538d10b518b310c74d3ca2690b6aaffeadccd74da79736171f86/sb-vite/deps/chunk-CQA3IIBG.js?v=13ed6ef4" which is in the optimize deps directory. The dependency might be incompatible with the dep optimizer. Try adding it to `optimizeDeps.exclude`.
```

```
$ ls -al node_modules/.cache/storybook/1c3385a5d25e538d10b518b310c74d3ca2690b6aaffeadccd74da79736171f86/sb-vite/deps
```

shows me that the file is indeed not there:
```
...
-rw-r--r--    1 justin  staff     1512 Aug 27 12:08 chunk-BUMXE3Y6.js
-rw-r--r--    1 justin  staff     1918 Aug 27 12:08 chunk-BUMXE3Y6.js.map
-rw-r--r--    1 justin  staff     1100 Aug 27 12:08 chunk-CHZ4HPWR.js
-rw-r--r--    1 justin  staff     1798 Aug 27 12:08 chunk-CHZ4HPWR.js.map
-rw-r--r--    1 justin  staff      433 Aug 27 12:08 chunk-CN4Y6LVA.js
-rw-r--r--    1 justin  staff     1023 Aug 27 12:08 chunk-CN4Y6LVA.js.map
-rw-r--r--    1 justin  staff      622 Aug 27 12:08 chunk-DLDDP7T2.js
-rw-r--r--    1 justin  staff     1589 Aug 27 12:08 chunk-DLDDP7T2.js.map
...
```

If I try to clean everything and start again, I'll get the same error with the exact same chunk name:

```
git clean -xffd && npm ci && npm run storybook --watch
```

This setup _was_ working for me, so I've tried to bisect the issue, which made me only more confused. There is no particular commit at which this error appears. Sometimes I rewind history and the pages start working, and then fail as I progress forward through history, but at different commits. Occasionally, head will work, though it seems to be consistently broken as of now.

I _tried_ to make a reproduction at https://stackblitz.com/github/elematic/inspector-elements/tree/31d3aa303e89a2f757cb5165d0c3d616199cc4e2?file=README.md but that seems to *work*.

I then tried to reproduce the Stackblitz environment as closely as possible locally, running Node v18.20.3 (and cleaning my local repo again) and it's still broken.

I'm beginning to think that there's some other cache in use that's not local to my project folder. Otherwise, I'm not sure how this could break intermittently, but stay broken once it breaks - sometimes fixing itself if I checkout different commits. This could explain the project working on Stackblitz because it creates a fresh environment each time it loads.

### Reproduction link

https://stackblitz.com/github/elematic/inspector-elements/tree/31d3aa303e89a2f757cb5165d0c3d616199cc4e2?file=README.md

### Reproduction steps

1. Go to the link above
2. Wait for Stackblitz's setup
3. Run `npm run storybook --watch`
4. Unfortunately for a reproduction, the Overview page will probably load fine.

### System

```bash
Storybook Environment Info:

  System:
    OS: macOS 14.5
    CPU: (10) arm64 Apple M1 Pro
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 22.3.0 - ~/.nvm/versions/node/v22.3.0/bin/node
    Yarn: 1.22.22 - ~/.nvm/versions/node/v22.3.0/bin/yarn
    npm: 10.8.1 - ~/.nvm/versions/node/v22.3.0/bin/npm <----- active
  Browsers:
    Chrome: 128.0.6613.85
    Safari: 17.5
  npmPackages:
    @storybook/addon-essentials: ^8.2.9 => 8.2.9 
    @storybook/addon-links: ^8.2.9 => 8.2.9 
    @storybook/blocks: ^8.2.9 => 8.2.9 
    @storybook/test: ^8.2.9 => 8.2.9 
    @storybook/web-components: ^8.2.9 => 8.2.9 
    @storybook/web-components-vite: ^8.2.9 => 8.2.9 
    eslint-plugin-storybook: ^0.8.0 => 0.8.0 
    storybook: ^8.2.9 => 8.2.9
```


### Additional context

_No response_