Though Gov. Ned Lamont’s proposed $200-per-person election-year rebate will dominate the political conversation, most of the $28.7 billion budget he released Wednesday will simply maintain a course he and legislators have already charted. The governor’s blueprint for the fiscal year that starts July 1 preserves modest new funding in K-12 education and some increases in health care and social services. But the plan, which would boost spending 4.4% beyond current levels, would break new ground