🥕[Bug]: JSON Schema: Redundant "required" Properties

The `jwt.audience` and `jwt.issuer` properties are not currently marked as required. However, for the `AzureAd` provider, these properties are essential for proper authentication configuration and should be required. For other providers, such as `StaticWebApps`, `AppService`, or `Simulator`, they are unnecessary and should not trigger schema validation errors.

## Suggestion

Update the schema to include conditional validation:

**Current Schema**

```json
"authentication": {
"type": "object",
"additionalProperties": false,
"properties": {
"provider": {
"type": "string",
"description": "The name of the authentication provider",
"default": "StaticWebApps"
},
"jwt": {
"type": "object",
"additionalProperties": false,
"properties": {
"audience": {
"type": "string"
},
"issuer": {
"type": "string"
}
}
}
}
}
```

**Updated Schema**

```json
"authentication": {
"type": "object",
"properties": {
"provider": {
"type": "string",
"enum": ["StaticWebApps", "AppService", "AzureAd", "Simulator"]
},
"jwt": {
"type": "object",
"properties": {
"audience": { "type": "string" },
"issuer": { "type": "string" }
}
}
},
"required": ["provider"],
"allOf": [
{
"if": {
"properties": { "provider": { "const": "AzureAd" } }
},
"then": {
"properties": {
"jwt": {
"required": ["audience", "issuer"]
}
}
}
}
]
}
```

Das Issue nennt keine Datei und keinen Test; finde zunächst das Schema der Authentifizierungskonfiguration und die Tests, die die Provider-Validierung abdecken. Bestätige, dass AzureAd sowohl jwt.audience als auch jwt.issuer erfordert, während dies für StaticWebApps, AppService und Simulator nicht gilt, und führe anschließend die relevanten Validierungstests aus.

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