Homeowners who hope to sell their homes have to be a lot more patient in 2024. Almost two-thirds — 64.7% — of homes for sale in June had been on the market for at least 30 days without going under contract, according to real estate brokerage firm Redfin. That compares to 59.6% a year ago during the same month. Less desirable homes are languishing on the market, which has resulted in a steady…