More leniently filter workspace symbols

Against the full name and not just the identifier, since it's
what's displayed in the search menu.

Now you can search methods by their parameters' names.

Author: andyleejordan

src/PowerShellEditorServices/Services/Workspace/Handlers/WorkspaceSymbolsHandler.cs

@@ -61,7 +61,7 @@ public override async Task<Container<SymbolInformation>> Handle(WorkspaceSymbolP
                         continue;
                     }
 
-                    if (!IsQueryMatch(request.Query, symbol.Id))
+                    if (!IsQueryMatch(request.Query, symbol.Name))
                     {
                         continue;
                     }