Refactor and centralize UI panel visibility logic

Consolidates the logic for showing and hiding UI elements into dedicated functions, `Update-DriverDownloadPanelVisibility` and `Update-OfficePanelVisibility`.

This change simplifies the event handlers for the "Download Drivers" checkbox by using a single handler for both checked and unchecked states. It also moves the initial UI setup from the main script into the core initialization module, improving code organization and reducing duplication.

FFUDevelopment/FFUUI.Core/FFUUI.Core.Initialize.psm1

@@ -239,6 +239,16 @@ function Initialize-UIDefaults {
     $State.Controls.chkCopyDrivers.IsChecked = $State.Defaults.generalDefaults.CopyDrivers
     $State.Controls.chkCopyPEDrivers.IsChecked = $State.Defaults.generalDefaults.CopyPEDrivers
     $State.Controls.chkCompressDriversToWIM.IsChecked = $State.Defaults.generalDefaults.CompressDownloadedDriversToWim
+
+    # Drivers tab UI logic
+    $makeList = @('Microsoft', 'Dell', 'HP', 'Lenovo')
+    foreach ($m in $makeList) {
+        [void]$State.Controls.cmbMake.Items.Add($m)
+    }
+    if ($State.Controls.cmbMake.Items.Count -gt 0) {
+        $State.Controls.cmbMake.SelectedIndex = 0
+    }
+    Update-DriverDownloadPanelVisibility -State $State
     
     # Set initial state for driver checkbox interplay
     Update-DriverCheckboxStates -State $State
@@ -246,6 +256,9 @@ function Initialize-UIDefaults {
     # Set initial state for InstallApps checkbox based on updates
     Update-InstallAppsState -State $State
 
+    # Set initial state for Office panel visibility
+    Update-OfficePanelVisibility -State $State
+
 }
 
 function Initialize-DynamicUIElements {