fix: Correct SharePoint site lookup in Get-FolderBrowser function

SharePointFunctions.ps1

@@ -112,17 +112,17 @@ function Get-FolderBrowser {
     try {
         # Get site ID first
         $siteUrl = $script:txtSiteUrl.Text.TrimEnd('/')
-        # Extract site path from URL
-        $sitePathMatch = $siteUrl -match "sharepoint\.com(.*)"
-        if (-not $sitePathMatch) {
+        
+        # Extract hostname and site path from URL
+        if ($siteUrl -match "https://([^/]+)(/.*)") {
+            $hostname = $matches[1]
+            $sitePath = $matches[2]
+        } else {
             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')"
+        # Get the site using hostname and path
+        $site = Get-MgSite -Filter "siteCollection/hostname eq '$hostname' and startsWith(webUrl, '$siteUrl')" -ErrorAction Stop
         
         if (-not $site) {
             throw "Site not found at $siteUrl"