Despite recent fiscal challenges, Gov. Wes Moore’s $63 billion budget plan remains largely intact under legislation approved unanimously Thursday in the Maryland Senate. The measure makes reserves available if needed to cover a miscalculation in Medicaid costs that was discovered after the governor submitted his budget to the General Assembly in January. The legislation now goes to the Maryland House, where majority Democrats haven’t been shy in voicing support to raise significant revenues this year to help address deficits in future years, pay for a major K-12 education funding overhaul and fund ambitious plans to fight climate change.