handle a few more edge cases with symlinks

XRTK-Core/Packages/com.xrtk.core/Editor/Utilities/SymbolicLinks/SymbolicLinker.cs

@@ -389,7 +389,11 @@ private static bool IsSymbolicPath(string path)
                         return false;
                     }
 
-                    Debug.LogError($"Invalid path: {path}");
+                    if (DebugEnabled)
+                    {
+                        Debug.LogError($"Invalid path: {path}");
+                    }
+
                     return false;
                 }
 
@@ -484,6 +488,10 @@ private static bool VerifySymbolicLink(string targetAbsolutePath)
 
                 return isValid && Directory.Exists(targetAbsolutePath);
             }
+            catch (ThreadAbortException)
+            {
+                return false;
+            }
             catch (Exception e)
             {
                 Debug.LogError(e);