HPCC-11084 Fixed

Removed (FALSE)  short circuited IF statement for loading xml scope within
inmacro lexer.

Signed-off-by: jamienoss <james.noss@lexisnexis.com>
Merge pull request #5699 from jamienoss/issue11084-fix-regression-from-removing-loadxml

HPCC-11084 Possible fix for regression created from 9892.

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>