feat(workflow-renderer): extract pure WorkflowBlockView + SubBlockRowView (#5267)

* feat(workflow-renderer): extract pure SubBlockRowView from the block's summary row

Splits the canvas block's collapsed subblock summary row into a pure SubBlockRowView (title + resolved displayValue + monospace flag) in @sim/workflow-renderer. The ~9 selector-name hydration hooks stay in the SubBlockRow container behind its memo comparator; the view receives only resolved strings. Byte-identical row JSX. First step toward the full WorkflowBlockView.

* feat(workflow-renderer): extract pure WorkflowBlockView shell

Moves the canvas block's render (header, badges, dynamic handles, ring) into a pure WorkflowBlockView in @sim/workflow-renderer. WorkflowBlock becomes a thin container that resolves all stores/hooks/permissions, builds the subblock rows + actionBar slots, and binds wouldCreateConnectionCycle (reads the edge store fresh per call to preserve cycle prevention). getHandleClasses/getHandleStyle move into the view; config.icon/bgColor, the webhook provider name, and every visual flag cross as props. Byte-identical JSX — every handle id/class/style/offset and badge guard preserved (verified by an independent adversarial audit). Container drops from 1137 to 829 lines.

Author: waleedlatif1