Add hanging option to unsetNodes (#5189)

Since this really just calls setNodes, it seems like it should offer the same options.
Without this change, doing something like applying a mark to the contents of a selected block with `hanging` works one way, while trying to do the reverse (remove the mark) cannot include the "hang".

packages/slate/src/transforms/node.ts

@@ -100,6 +100,7 @@ export interface NodeTransforms {
       at?: Location
       match?: NodeMatch<T>
       mode?: MaximizeMode
+      hanging?: boolean
       split?: boolean
       voids?: boolean
     }
@@ -825,6 +826,7 @@ export const NodeTransforms: NodeTransforms = {
       at?: Location
       match?: NodeMatch<T>
       mode?: MaximizeMode
+      hanging?: boolean
       split?: boolean
       voids?: boolean
     } = {}