Don't use pmc_dont_resolve_final_symlink flag for ".." removal.

The pmc_dont_resolve_final_symlink flag is stored in path mapping context
(path_mapping_context_t type) and is set to true when resolving
pathnames for symlink-reading functions (like lstat(), for example).

However, we want to resolve the final symlink on parts of pathname
before ".." path component when cleaning such components from the pathname.

This change makes clean_dotdots_from_path() function to pass
context with cleared pmc_dont_resolve_final_symlink flag
to recursive calls to sb_path_resolution() function.

Signed-off-by: Oleg Girko <oleg.girko@jolla.com>