fix: FluentSelect is always open when Multiple="true"

[Paxol]

🐛 Bug Report

FluentSelect shows as always open when Multiple="true"

💻 Repro or Code Sample

This is visible in the documentation page: https://fluentui-blazor.net/Select

🤔 Expected Behavior

It should be possible to open and close the popup with options like when Multiple is false, or at least make it obvious with an explaination in the documentation + an example with the explained behavior

🌍 Your Environment

• OS & Device:Windows PC
• Browser Microsoft Edge
• .NET and Fluent UI Blazor library Version: 4.7.2

[vnbaaij]

Unfortunately, that behavior is not supported by the underlying web component. Multiple = always open/expanded.

[Paxol]

What about the documentation part?

[vnbaaij]

What do you mean?

[Paxol]

I said in the issue that this behavior, the select always open when multiple is true, should be written in the documentation page that I linked

[vnbaaij]

I think all multiple selection examples being shown in the same way is a good indication that that is the default behavior. But I'll add a note somewhere.