fix: call queryWorkItemsInBaselineAsync instead of queryWorkItemsInRevisionAsync

The SearchWorkitemInBaselineAsync method was incorrectly calling
queryWorkItemsInRevisionAsync, which caused some work items to be
missing from historic baseline document results. Switched to the
correct queryWorkItemsInBaselineAsync call to align with the
function's intent.

Fixes #3

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Todd Schavey

src/Polarion/Client/PolarionClient_SearchWorkitemInBaselineAsync.cs

@@ -33,8 +33,8 @@ public async Task<Result<WorkItem[]>> SearchWorkitemInBaselineAsync(string basel
 
             query += $" AND project.id:{_config.ProjectId}";
 
-            var result = await _trackerClient.queryWorkItemsInRevisionAsync(new(query, order, baselineRevision,field_list.ToArray()));
-            return result.queryWorkItemsInRevisionReturn is null ? Result.Fail<WorkItem[]>("Query failed") : result.queryWorkItemsInRevisionReturn;
+            var result = await _trackerClient.queryWorkItemsInBaselineAsync(new(query, order, baselineRevision, field_list.ToArray()));
+            return result.queryWorkItemsInBaselineReturn is null ? Result.Fail<WorkItem[]>("Query failed") : result.queryWorkItemsInBaselineReturn;
         }
         catch (Exception ex)
         {