[Bug] Incorrect JSON template for linked app insights with ARM/Bicep

**Describe the bug**

I'm trying to deploy a SWA with an App Insights instance connected from a Bicep template.
Looking at the JSON overview in the portal, it seems that the App Insight instance is linked using special tags:
```json
...
"hidden-link: /app-insights-resource-id": "/subscriptions/123...",
"hidden-link: /app-insights-instrmentation-key": "98765431..."
...
```

When I tried to set this in my Bicep template to reference the App Insight resource:
```
tags: {
'hidden-link: /app-insights-resource-id': appInsights.id
'hidden-link: /app-insights-instrmentation-key': reference(appInsights.id, appInsights.apiVersion).InstrumentationKey
}
```
I get this error: `This expression is being used in an assignment to the "tags" property of the "Microsoft.Web/staticSites" type, which requires a value that can be calculated at the start of the deployment`

It seems that the tags values must be statically defined, so it's not possible to reference the App Insights also created in the template.

Do you know a workaround about this? I think using a dedicated module for the SWA resource might be a way around, but I don't want to use modules.
Out of curiosity, what was the rationale for using tags instead of regular properties for these values?

Thanks.