By Dan Weil Job openings fell 5.4% in June from May, to 10.7 million, but that number far topped the hiring total of 6.4 million. The labor market remains strong, with payrolls soaring 372,000 in July and unemployment sticking at a measly 3.6%. And though job openings fell 5.4% in June from May, to 10.7 million, that number surpassed the hiring total of 6.4 million by more than half. Now the question is whether the Federal Reserve’s interest-rate increases will do much damage to the jobs picture. The Fed has raised rates 225 basis points (2.25 percentage points) since March and has made clear …