fix: Improve site search in Get-FolderBrowser with better URL handling

SharePointFunctions.ps1

@@ -112,12 +112,24 @@ function Get-FolderBrowser {
     try {
         # Get site ID first
         $siteUrl = $script:txtSiteUrl.Text.TrimEnd('/')
-        $site = Get-MgSite -Search $siteUrl | Where-Object { $_.WebUrl -eq $siteUrl }
+        # Extract site path from URL
+        $sitePathMatch = $siteUrl -match "sharepoint\.com(.*)"
+        if (-not $sitePathMatch) {
+            throw "Invalid SharePoint URL format"
+        }
+        $sitePath = $matches[1]
+        
+        # Get site directly using path
+        $site = Get-MgSite -SiteId "root" -Property "siteCollection,webUrl,id" -ErrorAction Stop
+        $site = Get-MgSite -SiteId $site.Id -Property "siteCollection,webUrl,id" -ErrorAction Stop `
+            -Filter "startswith(webUrl, '$siteUrl')"
         
         if (-not $site) {
-            throw "Site not found"
+            throw "Site not found at $siteUrl"
         }
 
+        $script:txtStatus.Text += "Found site: $($site.WebUrl)`n"
+
         # Get drive (document library)
         $drives = Get-MgSiteDrive -SiteId $site.Id
         # Handle "Shared Documents" special case