The prepared statement emulation layer is handling binary content in a
way that creates warnings in MySQL.
When analysing the query logs, we saw that the content sent to the
server is missing `0x5C` characters when the using emulated prepares.
This introduces a minimal test case that reproduces the issue to aid the
solution.
More info: https://github.com/doctrine/dbal/pull/6522#issuecomment-2340939347
Signed-off-by: Luís Cobucci <lcobucci@gmail.com>