In the Search window, On searching for any asset and then saving the Search Query with system reserved keywords throws UnityException. Refer to the attached video and stack trace.

Steps to repro:
1. Create a new project
2. Window > Search
3. Type any required asset name in the Search.
4. Now Save Search Query with system reserved keywords like 'dot'(.)

Actual Result:
Saving Search Query with system reserved keywords throws UnityException

Expected Result:
No error should be in the console.

Occurring on:
2021.2.0a7, 2021.2.0a1, 2021.1.0b9, 2021.1.0a1

Note:
Quick Search is a Built-In Package in the Unity 2021.1.0a1

Environment:
Occurring on Windows 10 & macOS 10.15.

Stack Trace:
'Assets/..asset' is not a valid asset file name.
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

UnityException: Creating asset at path Assets/..asset failed.
UnityEditor.Search.SearchQuery.SaveQuery (UnityEditor.Search.SearchQuery asset, UnityEditor.Search.SearchContext context, System.String folder, System.String name) (at /Users/bokken/buildslave/unity/build/Modules/QuickSearch/Editor/SearchQuery.cs:115)
UnityEditor.Search.QuickSearch.CreateSearchQueryFromContext () (at /Users/bokken/buildslave/unity/build/Modules/QuickSearch/Editor/UI/QuickSearch.cs:1697)
UnityEditor.Search.QuickSearch.DrawToolbarButtons () (at /Users/bokken/buildslave/unity/build/Modules/QuickSearch/Editor/UI/QuickSearch.cs:1620)
UnityEditor.Search.QuickSearch.DrawToolbar (UnityEngine.Event evt) (at /Users/bokken/buildslave/unity/build/Modules/QuickSearch/Editor/UI/QuickSearch.cs:1535)
UnityEditor.Search.QuickSearch.OnGUI () (at /Users/bokken/buildslave/unity/build/Modules/QuickSearch/Editor/UI/QuickSearch.cs:679)