519e56f caused an attempt to get the language even if the file name
didn't start with the movie title. However, detecting a language when
fuzz >= 1 or the language is known, caused prio to be non-zero which
caused the file to be included regardless of its name. This shouldn't be
the behavior when sub-auto != all.
Now all the prio updates that depend on lang will only happen if the
file in question starts with the movie name. Since language was never
detected before if this wasn't true, the behavior should be the same as
before 519e56f when sub-auto != all.
Closes: #11749
46ee31b655