fix(collector): drop 'essentials' from flavour radios (it's the baseline role, not a flavour)

windows/collector/Collector.ps1

@@ -103,7 +103,9 @@ try {
     $grpFlavour.Size = New-Object Drawing.Size(360, 220)
     $form.Controls.Add($grpFlavour)
 
-    $flavours = @('developer', 'journalist', 'daily-driver', 'privacy-max', 'essentials')
+    # 'essentials' is the always-on baseline role (no flavour manifest), not a selectable
+    # flavour -- the four below are the real flavours; essentials apps ship with every one.
+    $flavours = @('developer', 'journalist', 'daily-driver', 'privacy-max')
     $radioFlavours = @()
     $fy = 32
     foreach ($f in $flavours) {