[validate-examples] Example validation fails to validate resource IDs for location-based resources

[tsatam]

Location-based resources (e.g. defined via the @locationResource decorator in TypeSpec) have a resource ID following the format /subscriptions/{subscriptionId}/locations/{location}/providers/Microsoft.Contoso/employees.

The current arm-id format does not allow such resource IDs: https://github.com/Azure/oav/blob/develop/lib/swaggerValidator/ajv.ts#L137-L146, and will cause examples for these resources to fail validation on their id property with INVALID_FORMAT.