[Hosts]Don't parse commented lines with an address and host in the middle (#26415)

src/modules/Hosts/Hosts.Tests/EntryTest.cs

@@ -74,6 +74,7 @@ namespace Hosts.Tests
         [DataRow("\t\thost\t\t10.1.1.1")]
         [DataRow("  host  10.1.1.1")]
         [DataRow("host 10.1.1.1")]
+        [DataRow("# comment 10.1.1.1 host # comment")]
         public void Not_Valid_Entry(string line)
         {
             var entry = new Entry(0, line);

src/modules/Hosts/Hosts/Models/Entry.cs

@@ -12,6 +12,8 @@ namespace Hosts.Models
 {
     public partial class Entry : ObservableObject
     {
+        private static readonly char[] _spaceCharacters = new char[] { ' ', '\t' };
+
         [ObservableProperty]
         [NotifyPropertyChangedFor(nameof(Valid))]
         private string _address;
@@ -99,7 +101,7 @@ namespace Hosts.Models
 
             var addressHost = lineSplit[0];
 
-            var addressHostSplit = addressHost.Split(' ', '\t');
+            var addressHostSplit = addressHost.Split(_spaceCharacters, StringSplitOptions.RemoveEmptyEntries);
             var hostsBuilder = new StringBuilder();
             var commentBuilder = new StringBuilder();
 
@@ -107,17 +109,9 @@ namespace Hosts.Models
             {
                 var element = addressHostSplit[i].Trim();
 
-                if (string.IsNullOrWhiteSpace(element))
+                if (i == 0 && IPAddress.TryParse(element, out var _) && (element.Contains(':') || element.Contains('.')))
                 {
-                    continue;
+                    Address = element;
-                }
-
-                if (Address == null)
-                {
-                    if (IPAddress.TryParse(element, out var _) && (element.Contains(':') || element.Contains('.')))
-                    {
-                        Address = element;
-                    }
                 }
                 else
                 {