Pressing cancel on the Material picker will revert an override material to the originally applied material. #4216

Environment

Second Life RELEASE 7.1.13.14343205944 - 2025.03

Description

Pressing cancel on the Material picker will revert an override material to the originally applied material.

Reproduction steps

1. Drag a material onto a cube.
2. Drag a texture onto the same face of the cube. Verify the texture is now visible on the cube.
3. In the edit tool, click Select Face.
4. Select the object face with the material.
5. In the Texture tab of the edit tool, click the Material swatch.
6. In the PICK: TEXTURE floater, click the Cancel button.

Observed: The material on the cube reverts to the original material that was applied in step 1.
Video: https://github.com/user-attachments/assets/23ad389f-218f-456b-acc7-6d1d1d33cfe8

Expected: The material on the cube should be the same as it was when editing of the material began.

This bug does not reproduce in 7.1.12.13550888671 - ForeverFPS

Found in testing of https://github.com/secondlife/iqa/issues/500