INGLEWOOD, Calif. — In the aftermath of a quarterfinal win that somehow felt at once decisive and uncertain, Spain’s players and coach left no doubt about their confidence or intention in four days’ time. Awaiting in a World Cup semifinal is France, a team that has looked almost predestined to raise another World Cup trophy. “If anyone should be afraid it should be them — we knocked them out of the Euros,” Lamine Yamal, the team’s talented young attacker, told reporters.