Fix LaTeX error on Overleaf when switching paper modes (cvpr-org#50)

In review and rebuttal mode, we use the "lineno" package for numbering lines. When switching to a different mode, the "`\@LN`" macro may remain in cached `.aux` files, leading to build errors (cvpr-org#49).

Defining the macro as empty fixes that (https://tex.stackexchange.com/a/125779).

Update template for CVPR 2025

Updates by Jianxin Wu (PC)

Updates by Jianxin Wu (PC)

template msword

disabled supplementary by default

disabled supplementary by default

Merge branch 'main' of github.com:cvpr-org/author-kit into 3DV2024

minor tweaks for 3DV

updated conference name (CVPR→3DV)