Rhode Island economic development officials will soon decide whether to grant tax incentives to toy maker Hasbro Inc. for its plans to add nearly 300 jobs to its Rhode Island payroll. The state’s Economic Development Corp. board is set to consider Hasbro’s request at a Monday evening meeting. The company seeks up to $1.6 million in sales tax breaks through a state program designed to encourage companies to relocate or expand in the state. The company says the expansion will create an estimated 284 professional and administrative positions within three years. The jobs would be located in Providence. Hasbro is based in Pawtucket and employs 1,400 people in Rhode Island.