Add patch for kytea 0.4.6

Official zip of kytea 0.4.6 is still broken for mac.
I will patch following fix.
 https://github.com/neubig/kytea/pull/8

After merging this PR, I believe CI will pass.
Then I want to merge #30623
Can you submit this patch upstream and link to the upstream report in this commit, thanks. Also, please use `.diff` rather than `.patch`.