I expect the Eagles to play us impossibly tough if that game matters at all.
Doug Pederson learned from Andy Reid, I'm sure, that just pulling out all the stops against Dallas buys you a hilarious amount of goodwill in Philly. (Doug moved on from the Eagles after a year under Reid in Philly, so he wasn't there for the game Reid opened with a surprise onside kick in 2000... but I'm sure he's heard the story plenty.)
Even if it doesn't matter to them because they have homefield locked up, they probably still play all their guys and try to score brownie points with the fanbase. The goodwill that earns them outweighs the risk. Foles could literally get injured in that final game, sending them into the playoffs with a 3rd-stringer QB, and their fans will be fine with it because it happened in the name of trying to stick it to us.
We're their Super Bowl. Even in years where they might actually hope to win a real Super Bowl, not just the imaginary one they play twice a year against us.