fix(flowchart): preserve raw subgraph direction value; normalize TD→TB only for dagre - #2

fix(flowchart): preserve raw subgraph direction value; normalize TD→TB only for dagre#2

sjackson0109 merged 4 commits into

fix/4648-directionssjackson0109/mermaid:fix/4648-directionsfrom

copilot/add-direction-keyword-handlingsjackson0109/mermaid:copilot/add-direction-keyword-handlingCopy head branch name to clipboard