efl-wl: move flags_run to exec_flags property
Summary:
typically the compositor wants to run all exes with the same flags so this
makes more sense
Depends on D11470
Reviewers: segfaultxavi, bu5hm4n
Reviewed By: segfaultxavi
Subscribers: cedric, reviewers, committers
Tags: efl
Differential Revision: https://phab.enlightenment.org/D11475