Before this commit, test data for 'synthesizedDataClassMembers' test
was different between PSI and LT, because we had SYNTHETIC_OFFSET = -2
for synthetic functions and NaiveSourceBasedFileEntryImpl calculated
line/column as 0 for LT. In this commit the dumper was edited to
count -1 as line -1 / column -1 independent of a file entry used.
Mikhail Glukhikh
4ed6ece78b