- Added a bounds check in the DICTIONARY_NUMERIC_FLAG case to prevent a
heap buffer overflow when writing decoded numeric literals.
- Tightened the existing bounds check for dictionary strings to use `>=`
instead of `>`, preventing a potential off-by-one overflow when
writing the null terminator.
- Fixed the `MaterialChunkHeapOverflow` and `MaterialChunkOOBReadText`
unit tests in `test_filaflat.cpp` by adding missing header fields to
the mock payloads so they correctly pass initialization.
Fixes#9871
92dc063a8a