With "debug.inlineValues" set in VS Code, no inline values appear

[HumanEquivalentUnit]

Issue Description

In VSCode settings, enable debug.inlineValues and step through some PowerShell code, no inline value decorators appear. They do appear when debugging Python code.

PowerShell extension is installed, variable values do appear on hover, and confirmed with other people that they don't see the decorators either. I do see decorators when debugging Python code, so seems less likely to be my install or theme or config.

This is either a bug report that they aren't working, or a feature request to add them, not sure which.
VSCode PR for the feature, for reference.

Expected Behaviour

Variable values appear in "tooltips" at the end of the lines of code, e.g. as in this screenshot of Chrome debugging JavaScript:

Actual Behaviour

They don't appear when debugging PowerShell code (but do appear when debugging Python code).

System Details

System Details Output

### VSCode version: 1.46.1 cd9ea6488829f560dc949a8b2fb789f3cdc05f5d x64

### VSCode extensions:
dbaeumer.vscode-eslint@2.1.5
eamodio.gitlens@10.2.2
EFanZh.graphviz-preview@1.3.3
Ionide.Ionide-fsharp@4.14.0
ms-dotnettools.csharp@1.22.1
ms-python.python@2020.6.91350
ms-vscode.powershell@2020.6.0
Stephanvs.dot@0.0.1


### PSES version: 2.2.0.0

### PowerShell version:

Name                           Value
----                           -----
PSVersion                      7.0.2
PSEdition                      Core
GitCommitId                    7.0.2
OS                             Microsoft Windows 10.0.18363
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

[SydneyhSmith]

Looks like this snippet may be helpful to add this: https://github.com/Microsoft/vscode-debugadapter-node/blob/896566e0be3f48e5cf90fb715b3b3ffbfa777888/protocol/src/debugProtocol.ts#L1329-L1337