HPCC-12435 Remove leading '~' character from logical file name provided
by queryLogicalFilename() on hthor

Add fix.

Signed-off-by: Attila Vamos <attila.vamos@gmail.com>
Merge pull request #6547 from AttilaVamos/HPCC-12435-fix

HPCC-12435 Remove leading '~' character from logical file name provided by queryLogicalFilename() on hthor