Export result additional options do not accept more than option at the moment

Describe the bug

request_body = ExportResultPostRequestBody(
	display_name = "Export 4",
	export_criteria = ExportCriteria.PartiallyIndexed,
	export_location = ExportLocation.ResponsiveLocations | ExportLocation.NonresponsiveLocations,
	additional_options = AdditionalOptions.AdvancedIndexing | AdditionalOptions.SubfolderContents | AdditionalOptions.AllItemsInFolder | AdditionalOptions.ListAttachments | AdditionalOptions.TeamsAndYammerConversations | AdditionalOptions.HtmlTranscripts | AdditionalOptions.CloudAttachments | AdditionalOptions.IncludeFolderAndPath | AdditionalOptions.SplitSource | AdditionalOptions.CondensePaths | AdditionalOptions.FriendlyName | AdditionalOptions.IncludeReport,
	export_format = ExportFormat.Eml,
)

Looking to set multiple options to additional options here

Expected behavior

request_body = ExportResultPostRequestBody(
	display_name = "Export 4",
	export_criteria = ExportCriteria.PartiallyIndexed,
	export_location = ExportLocation.ResponsiveLocations | ExportLocation.NonresponsiveLocations,
	additional_options = [AdditionalOptions.AdvancedIndexing, AdditionalOptions.SubfolderContents , AdditionalOptions.AllItemsInFolder],
	export_format = ExportFormat.Eml,
)

How to reproduce

just try setting more than 2 options, it will not work. But works for single option

SDK Version

msgraph-beta-sdk 1.48.0

Latest version known to work for scenario above?

No response

Known Workarounds

No response

Debug output

</details>


### Configuration

_No response_

### Other information

_No response_

使用 msgraph-beta-sdk 1.48.0 中所示的 ExportResultPostRequestBody 範例重現問題。接著檢查 AdditionalOptions 和 ExportResultPostRequestBody 的定義，以了解多個值如何表示及序列化。當請求能接受並正確傳送多個額外選項，且涵蓋單一值和多個值時，即表示完成。