fix: KeyNotFoundException in FluentAppBar

[JamesNK]

🐛 Bug Report

I sometimes see this error in Aspire when resizing the browser window:

💻 Repro or Code Sample

🤔 Expected Behavior

No error

😯 Current Behavior

Error

💁 Possible Solution

Use TryGetValue here:

fluentui-blazor/src/Core/Components/AppBar/FluentAppBar.razor.cs

Line 131 in c9fe1ce

var app = _internalAppBarContext.Apps[item.Id];

🔦 Context

🌍 Your Environment

• OS & Device: [e.g. MacOS, iOS, Windows, Linux] on [iPhone 7, PC]
• Browser [e.g. Microsoft Edge, Google Chrome, Apple Safari, Mozilla FireFox]
• .NET and Fluent UI Blazor library Version [e.g. 8.0.2 and 4.4.1]

[JamesNK]

(I would assign this to copilot to fix but I don't have permission in this repo)

[MarvinKlein1508]

@JamesNK I assigned Copilot but I don't now how I can trigger it to start working.

[vnbaaij]

@copilot implement the mentioned trygetvalue

[dvoituron]

Hi. My name is not Copilot but I pushed this PR #4146 :-)

[Tyme-Bleyaert]

Hi. My name is not Copilot but I pushed this PR #4146 :-)

Sound like something copilot would say 😄 .
Also would ContainsKey and TryGetValue not be a double key lookup?

[dvoituron]

Yes, it's a double check. I started with the first one and tested the second one afterwards :-)