TORONTO—Calls for Ontario Premier Doug Ford to undo new wide-ranging COVID-19 restrictions on outdoor recreational activities grew louder Sunday amid pledges of federal help to ease the toll on the province’s strained health-care system. Prime Minister Justin Trudeau and several cabinet ministers promised to comb federal departments for available personnel who could be redeployed to the hard-hit province, as well as to cover the cost of flying in additional supports from other provinces. There was no immediate word from Ford on Trudeau’s promise, but a spokeswoman for the province’s health minister issued a statement expressing gratitude for the offer. The proposed federal aid comes two days after Ford issued a nationwide appeal for support for Ontario’s strained hospitals and other health-care resources. Ford’s office did not respond to a request for comment on Sunday. The federal aid offer, as well as mounting questions about the point of restrictions shuttering most …