Fix incorrect shader state after shader interface creation

Use store-current-and-restore-previous OpenGL program in the OpenGL
Shader Interface. This is a better fix for the initial error, which
additionally solves interface artifacts when opening non-default
startyp files on macOS with AMD GPU.

source/blender/gpu/opengl/gl_shader.cc

@@ -1004,11 +1004,6 @@ bool GLShader::finalize(const shader::ShaderCreateInfo *info)
   else {
     interface = new GLShaderInterface(shader_program_);
   }
-  /**
-   * WORKAROUND: Creating the shader interface changes the active program.
-   * Make sure to update the context, otherwise we might have a missing bind.
-   */
-  Context::get()->shader = this;
 
   return true;
 }