[Bug]: dash.deno.com fails to load

### Problem description

I just tried to login to my Deno Deploy dashboard, and all I see is a blank screen. The console shows the following error:

```
Uncaught (in promise) SyntaxError: The requested module 'https://dash.deno.com/utils/mixpanel.ts?v=19866bce222' doesn't provide an export named: 'sendMixpanelEventsToDash' [NewPlaygroundButton.tsx:69:524](https://dash.deno.com/components/shared/NewPlaygroundButton.tsx?v=19866bce222)
S https://dash.deno.com/-/deno.land/x/patched_aleph@1.0.0-alpha.68.6/framework/react/router.ts?v=19866bce222:1
AsyncFunctionThrow self-hosted:804
(Async: async)
emit https://dash.deno.com/-/esm.sh/mitt@3.0.0?v=19866bce222:1
map self-hosted:175
emit https://dash.deno.com/-/esm.sh/mitt@3.0.0?v=19866bce222:1
u https://dash.deno.com/-/deno.land/x/patched_aleph@1.0.0-alpha.68.6/framework/core/redirect.ts?v=19866bce222:1
u https://dash.deno.com/routes/orgs/$id/index.tsx?v=v87httge31c8:1
Ul https://dash.deno.com/main.tsx?v=v87httge31c8:6
Ss https://dash.deno.com/main.tsx?v=v87httge31c8:8
ys https://dash.deno.com/main.tsx?v=v87httge31c8:8
ud https://dash.deno.com/main.tsx?v=v87httge31c8:8
ya https://dash.deno.com/main.tsx?v=v87httge31c8:8
ms https://dash.deno.com/main.tsx?v=v87httge31c8:8
ge https://dash.deno.com/main.tsx?v=v87httge31c8:1
Zt https://dash.deno.com/main.tsx?v=v87httge31c8:1
(Async: setTimeout handler)
Ls https://dash.deno.com/main.tsx?v=v87httge31c8:1
Xe https://dash.deno.com/main.tsx?v=v87httge31c8:1
Ot https://dash.deno.com/main.tsx?v=v87httge31c8:1
unstable_scheduleCallback https://dash.deno.com/main.tsx?v=v87httge31c8:1
_s https://dash.deno.com/main.tsx?v=v87httge31c8:8
ve https://dash.deno.com/main.tsx?v=v87httge31c8:8
Be https://dash.deno.com/main.tsx?v=v87httge31c8:8
Hf https://dash.deno.com/main.tsx?v=v87httge31c8:6
S https://dash.deno.com/-/deno.land/x/patched_aleph@1.0.0-alpha.68.6/framework/react/router.ts?v=19866bce222:1
InterpretGeneratorResume self-hosted:1332
AsyncFunctionNext self-hosted:800
(Async: async)
emit https://dash.deno.com/-/esm.sh/mitt@3.0.0?v=19866bce222:1
map self-hosted:175
emit https://dash.deno.com/-/esm.sh/mitt@3.0.0?v=19866bce222:1
u https://dash.deno.com/-/deno.land/x/patched_aleph@1.0.0-alpha.68.6/framework/core/redirect.ts?v=19866bce222:1
s https://dash.deno.com/routes/index.tsx?v=v87httge31c8:1
Ul https://dash.deno.com/main.tsx?v=v87httge31c8:6
Ss https://dash.deno.com/main.tsx?v=v87httge31c8:8
ys https://dash.deno.com/main.tsx?v=v87httge31c8:8
id https://dash.deno.com/main.tsx?v=v87httge31c8:8
ms https://dash.deno.com/main.tsx?v=v87httge31c8:8
ge https://dash.deno.com/main.tsx?v=v87httge31c8:1
Zt https://dash.deno.com/main.tsx?v=v87httge31c8:1
(Async: setTimeout handler)
Ls https://dash.deno.com/main.tsx?v=v87httge31c8:1
Xe https://dash.deno.com/main.tsx?v=v87httge31c8:1
Zt https://dash.deno.com/main.tsx?v=v87httge31c8:1
(Async: setTimeout handler)
```

### Steps to reproduce

1. Login to dash.deno.com

### Expected behavior

The dashboard loads.

### Environment

- macOS
- Firefox

### Possible solution

_No response_

### Additional context

_No response_

Reproduce the blank dashboard on macOS Firefox, then inspect NewPlaygroundButton.tsx and utils/mixpanel.ts named in the error. Trace the missing sendMixpanelEventsToDash export and verify that logging in loads the dashboard without the module error.

Written by the indexing model from the issue text.