Illegal command '\ifile' found as part of a title section

[aotto1968]

Describe the bug
get an internal error related to @par and @copybrief

\par EXAMPLE: \copybrief MkStringR
\snippet test.h MkStringR

• the goal was to create extra docu which refers to the MkStringR code
• the @snippet is OK
• the problem is the @par heading which is not what I expect
• I get also an error message on stderr

.../doxygen_bug__par_with_copybrief/test.doc:6: warning: Illegal command '\ifile' found as part of a title section
.../doxygen_bug__par_with_copybrief/test.doc:6: warning: Illegal command '\iline' found as part of a title section

• another problem: I get TWO error message for ONE bug

Screenshots

To Reproduce
use the attachment: doxygen_bug__par_with_copybrief.tar.gz

Expected behavior

1. better error message … OR …
2. allow the @copybrief data be an @par argument

Version

doxygen -V
1.12.0 (14fc65f)
with sqlite3 3.42.0.

[albert-github]

I've just pushed a proposed patch, pull request #11033

[albert-github]

Code has been integrated in master on GitHub (please don't close the issue as this will be done at the moment of an official release).

[doxygen]

This issue was previously marked 'fixed but not released',
which means it should be fixed in doxygen version 1.12.0.
Please verify if this is indeed the case. Reopen the
issue if you think it is not fixed and please include any additional information
that you think can be relevant (preferably in the form of a self-contained example).