tests: IDE: prevent edit_project to save modifed example so that it doesn't influence following tests
#EDE (Engineering-Data-Exchange) - generated by Beremiz BACnet plugin;;;;;;;;;;;;;;;
PROJECT_NAME;%(Project Name)s;;;;;;;;;;;;;;
VERSION_OF_REFERENCEFILE;%(EDE file version)d;;;;;;;;;;;;;;
TIMESTAMP_OF_LAST_CHANGE;%(Current Time)s;;;;;;;;;;;;;;
AUTHOR_OF_LAST_CHANGE;%(Project Author)s;;;;;;;;;;;;;;
VERSION_OF_LAYOUT;2.1;;;;;;;;;;;;;;
#mandatory;mandatory;mandatory;mandatory;mandatory;optional;optional;optional;optional;optional;optional;optional;optional;optional;optional;optional
#keyname;device obj.-instance;object-name;object-type;object-instance;description;present-value-default;min-present-value;max-present-value;settable;supports COV;hi-limit;low-limit;state-text-reference;unit-code;vendor-specific-address