[Windows] Refactor PATH helpers (#8885)

images/windows/scripts/helpers/InstallHelpers.ps1

@@ -869,3 +869,39 @@ function Test-FileSignature {
         throw "Signature thumbprint do not match expected."
     }
 }
+
+function Update-Environment {
+    <#
+    .SYNOPSIS
+        Updates the environment variables by reading values from the registry.
+
+    .DESCRIPTION
+        This function updates current environment by reading values from the registry.
+        It is useful when you need to update the environment variables without restarting the current session.
+
+    .NOTES
+        The function requires administrative privileges to modify the system registry.
+    #>
+
+    $locations = @(
+        'HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager\Environment',
+        'HKCU:\Environment'
+    )
+
+    # Update PATH variable
+    $pathItems = $locations | ForEach-Object { 
+        (Get-Item $_).GetValue('PATH').Split(';') 
+    } | Select-Object -Unique
+    $Env:PATH = $pathItems -join ';'
+
+    # Update other variables
+    $locations | ForEach-Object {
+        $key = Get-Item $_
+        foreach ($name in $key.GetValueNames()) {
+            $value = $key.GetValue($name)
+            if (-not ($name -ieq 'PATH')) {
+                Set-Item -Path Env:$name -Value $value
+            } 
+        }
+    }
+}