Fix running compute baseline tests with qml.exe opengl backend

The qml.exe uses compatibility context, which chooses at maximum GLSL
140, which is not enough for the compute shaders and the shader
compilation fails.

Add the actual context version to the compiled outputs list just as with
other branches.

Change-Id: I6b32450f6cdf586e20db03a65e85260695238a75
Reviewed-by: Antti Määttä <antti.maatta@qt.io>