ISKEYWORD ignores words in hints such as nolock, hash

Start by running the provided PowerShell script with TSql150Parser and inspect the ScriptTokenStream output for nolock and hash, focusing on their token types and IsKeyword() results. Trace how TSql150Parser classifies these hint words and verify that the corrected classification is reflected in the token stream without parsing errors.

• SqlPackage or DacFx Version:
• .NET Framework (Windows-only) or .NET Core: .NET Framework
• Environment (local platform and source/target platforms):
  Parser for 2019, Windows
  Steps to Reproduce:

1. Powershell script as below - does not recognize nolock , returns no for iskeyword.
   $ScriptData = @"
   --Testing tokens
   begin tran
   SELECT * FROM mytable (nolock);
   commit tran
   "@

Add-Type -Path "C:\ugpresentation\ScriptDom\Microsoft.SqlServer.TransactSql.ScriptDom.dll"
Write-Host "Attempting to parse..."
try {
$parser = New-Object Microsoft.SqlServer.TransactSql.ScriptDom.TSql150Parser($true)
#object to handle parsing errors if any
$parseErrors = New-Object System.Collections.Generic.List[Microsoft.SqlServer.TransactSql.ScriptDom.ParseError]
#object that handles strings script to parse
$stringReader = New-Object System.IO.StringReader($ScriptData)

#parser creates parsed objects from strings 
$parsedObjects = $parser.Parse($stringReader, [ref]$parseErrors)
$ctr = 0

 foreach ($token in $parsedobjects.ScriptTokenStream)
{
    write-host "Text: " $token.text -ForegroundColor Cyan
    write-host "Type: " $token.tokentype -ForegroundColor green
    write-host "Location: Line" $parsedobjects.ScriptTokenStream[$ctr].Line "Column " $parsedobjects.ScriptTokenStream[$ctr].column  -ForegroundColor yellow
    write-host "Is this a Reserved Word? " $token.IsKeyword()-ForegroundColor white
    $ctr++
} #token
if($parseErrors.Count -gt 0) {
    throw "$($parseErrors.Count) parsing error(s): $(($parseErrors | ConvertTo-Json))"
}
Write-Host "Complete!" -ForegroundColor Green

}
catch {
throw
}

Did this occur in prior versions? If not - which version(s) did it work in?
Works same on every version
(DacFx/SqlPackage/SSMS/Azure Data Studio)