Alicevision version greater than 1.2.6

[SBCV]

From #72

In meshroom_file_handler.py there is a version check for the meshroom version being smaller than 1.2.6

If I comment out this check it seems to load Meshroom-2023.3.0 project just fine, except for one thing:
if I enable 'Adjust Frame Numbers of Camera Animation' it will try to find the unreconstructed cameras by listing all images in the original image directory. But since this listing is recursive (and it needs to be, because the input images can be spread about multiptl subdirs?) it picks up all Meshroom generated images ( .exr depthmaps, undistored images, filtered depthmaps, everything) as well.