win_chocolatey: Perform exact presence check (#23098)

The current implementation matches libreoffice-oldstable when testing for libreoffice.
So uninstalling libreoffice fails when libreoffice-oldstable is installed.

```
PS C:\WINDOWS\system32> choco list --local-only libreoffice
Chocolatey v0.10.3
libreoffice-oldstable 5.2.6
1 packages installed.
PS C:\WINDOWS\system32> choco list --local-only --exact libreoffice
Chocolatey v0.10.3
0 packages installed.
```

The solution is easy, just add `--exact`.

lib/ansible/modules/windows/win_chocolatey.ps1

@@ -100,7 +100,7 @@ Function Choco-IsInstalled
         [string]$package
     )
 
-    $cmd = "$executable list --local-only $package"
+    $cmd = "$executable list --local-only --exact $package"
     $output = invoke-expression $cmd
 
     $result.rc = $LastExitCode
@@ -249,7 +249,7 @@ Function Choco-Install
 
     if (Choco-IsInstalled $package)
     {
-        if ($upgrade)
+        if ($state -eq "latest")
         {
             Choco-Upgrade -package $package -version $version -source $source -force $force `
                 -installargs $installargs -packageparams $packageparams `