Semantic Highlighting breaks when rapidly typing due to improper cancellation

Prerequisites

• I have written a descriptive issue title.
• I have searched all open and closed issues to ensure it has not already been reported.
• I have read the troubleshooting guide.
• I am sure this issue is with the extension itself and does not reproduce in a standalone PowerShell instance.
• I have verified that I am using the latest version of Visual Studio Code and the PowerShell extension.
• If this is a security issue, I have read the security issue reporting guidance.

Summary

Like the title says, semantic highlighting doesn't work for any new text you type, it only works for the text that was already there when you opened a file. Interestingly the VS code token inspect feature correctly lists the semantic color but the visuals aren't updated. Initially I assumed this was a bug in VS code itself but if I try it with the C# extension it works perfectly fine in VS code so they must be doing something different from this extension.
Here's a clip that demonstrates the issue:

https://github.com/user-attachments/assets/1ea3f679-ad4d-413e-97f1-4e4a17d9b610

PowerShell Version

Name                           Value
----                           -----
PSVersion                      7.5.0-preview.5
PSEdition                      Core
GitCommitId                    7.5.0-preview.5
OS                             Microsoft Windows 10.0.19045
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Name             : Visual Studio Code Host
Version          : 2024.5.0
InstanceId       : 0de14edd-e7a3-4dcc-9ad1-f833dc86ffca
UI               : System.Management.Automation.Internal.Host.InternalHostUserInterface
CurrentCulture   : da-DK
CurrentUICulture : da-DK
PrivateData      : Microsoft.PowerShell.ConsoleHost+ConsoleColorProxy
DebuggerEnabled  : True
IsRunspacePushed : False
Runspace         : System.Management.Automation.Runspaces.LocalRunspace

Visual Studio Code Version

1.96.0-insider
19fabc20e35c89915c772116503a079554166a3f
x64

Extension Version

ms-vscode.powershell@2024.5.0

Steps to Reproduce

Enable semantic highlighting with colors that don't match the colors from the textmate highlighting and start typing.

Visuals

No response

Logs

No response