Version v2021.5.1 Semantic Textmate Scope is incorrect for negative numeric literals, when used as a parameter

`"editor.semanticHighlighting.enabled": true` is on

### System Details
<details><summary>System Details (Click to Expand)

</summary>

System Details Output
```
### VSCode version: 1.56.2 054a9295330880ed74ceaedda236253b4f39a335 x64

### VSCode extensions:
adrieankhisbe.vscode-ndjson@0.100.0
ahebrank.yaml2json@0.0.3
alefragnani.Bookmarks@13.0.4
arcticicestudio.nord-visual-studio-code@0.15.1
bierner.docs-view@0.0.9
bungcip.better-toml@0.3.2
christian-kohler.path-intellisense@2.3.0
CoenraadS.bracket-pair-colorizer@1.0.61
CoenraadS.bracket-pair-colorizer-2@0.2.0
darkriszty.markdown-table-prettify@3.4.0
DavidAnson.vscode-markdownlint@0.41.1
donjayamanne.githistory@0.6.16
DotJoshJohnson.xml@2.5.1
eamodio.gitlens@11.4.1
eamodio.tsl-problem-matcher@0.4.0
Equinusocio.vsc-community-material-theme@1.4.2
Equinusocio.vsc-material-theme@33.2.0
equinusocio.vsc-material-theme-icons@1.2.2
esbenp.prettier-vscode@6.4.0
evan-buss.font-switcher@4.0.1
firefox-devtools.vscode-firefox-debug@2.9.4
formulahendry.code-runner@0.11.4
GitHub.github-vscode-theme@4.1.1
GitHub.vscode-pull-request-github@0.26.0
hbenl.vscode-test-explorer@2.20.2
icsharpcode.ilspy-vscode@0.10.0
juanmnl.vscode-theme-hydra@3.2.0
littlefoxteam.vscode-python-test-adapter@0.6.8
LouisWT.regexp-preview@0.1.5
matangover.mypy@0.2.0
mechatroner.rainbow-csv@1.8.1
medo64.code-point@1.7.5
ms-azure-devops.azure-pipelines@1.183.0
ms-dotnettools.csharp@1.23.12
ms-dotnettools.dotnet-interactive-vscode@1.0.2256020
ms-dotnettools.vscode-dotnet-runtime@1.1.0
ms-dotnettools.vscode-dotnet-sdk@0.5.0
ms-mssql.mssql@1.10.1
ms-python.python@2021.6.908196464-dev
ms-python.vscode-pylance@2021.6.1-pre.1
ms-toolsai.jupyter@2021.6.832593372
ms-vscode-remote.remote-wsl@0.56.4
ms-vscode.azure-account@0.9.8
ms-vscode.cpptools@1.4.0
ms-vscode.powershell@2021.5.1
ms-vscode.powershell-preview@2020.7.0
ms-vscode.test-adapter-converter@0.0.9
ms-vscode.vscode-typescript-tslint-plugin@1.3.3
msjsdiag.debugger-for-chrome@4.12.12
octref.vscode-json-transform@0.1.2
PKief.material-icon-theme@4.7.0
PowerQuery.vscode-powerquery@0.1.19
RandomFractalsInc.snippets-viewer@1.9.0
RandomFractalsInc.vscode-data-preview@2.3.0
redhat.vscode-commons@0.0.6
redhat.vscode-xml@0.16.1
redhat.vscode-yaml@0.19.2
RobbOwen.synthwave-vscode@0.1.8
rogalmic.bash-debug@0.3.9
rust-lang.rust@0.7.8
sallar.vscode-duotone-dark@0.3.3
samuelcolvin.jinjahtml@0.16.0
shakram02.bash-beautify@0.1.1
shd101wyy.markdown-preview-enhanced@0.5.18
stansw.vscode-odata@0.1.0
stuart.unique-window-colors@1.0.51
svipas.control-snippets@1.9.1
TylerLeonhardt.vscode-inline-values-powershell@0.0.5
TylerLeonhardt.vscode-pester-test-adapter@0.0.23
vadimcn.vscode-lldb@1.6.4
VisualStudioExptTeam.vscodeintellicode@1.2.14
vscode-icons-team.vscode-icons@11.4.0
webfreak.debug@0.25.0
wwm.better-align@1.1.6
yzhang.markdown-all-in-one@3.4.0
zhuangtongfa.material-theme@3.10.14


### PSES version: 2.3.0.0

### PowerShell version:

Name                           Value
----                           -----
PSVersion                      7.1.2
PSEdition                      Core
GitCommitId                    7.1.2
OS                             Microsoft Windows 10.0.19041
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0
```


</details>

### Issue Description

The Textmate scopes or token is wrong on negative numeric literals

![image](https://user-images.githubusercontent.com/3892031/120905925-1396d200-c61b-11eb-8e8d-f4bb5efae140.png)

### Working behavior

Non-parameters, and positive numbers are okay

![textmate_scopes-example1](https://user-images.githubusercontent.com/3892031/120905809-4c827700-c61a-11eb-8382-c8d9b34497a8.png)


#### Expected Behaviour

To share similar tokens/scopes

#### To reproduce

It seems to occur when:

1. it's a negative numeric literal (int, or decimal)
2. it's a parameter
3. the parameter type doesn't matter

Code used:
```ps1

function DoNothing {
    param(
        [Parameter(Mandatory, Position = 0)]
        [int]$Number
    )
}
function DoMoreNothing {
    param(
        [Parameter(Mandatory, Position = 0)]
        [string]$Text
    )
}

$x = 6                                               ; $x
$x = -6
DoNothing -6
DoNothing 6
DoNothing -Number 6
DoNothing -Number -6
DoMoreNothing -Text 6
DoMoreNothing -Text -6
```

### Actual Behavior

![textmate_scopes-example2-as-parameter](https://user-images.githubusercontent.com/3892031/120905812-51dfc180-c61a-11eb-9f98-a649d4995919.png)


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Version v2021.5.1 Semantic Textmate Scope is incorrect for negative numeric literals, when used as a parameter #207

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Version v2021.5.1 Semantic Textmate Scope is incorrect for negative numeric literals, when used as a parameter #207

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