revert "Jupyter -- scroll output by default"

- I really wanted to align with official jupyterlab, but after trying to
  use this all week... it is SOOOO annoying!

Author: williamstein

src/packages/frontend/jupyter/cell-output.tsx

@@ -144,7 +144,7 @@ function OutputColumn({
   }
   return (
     <CellOutputMessages
-      scrolled={cell.get("scrolled", true)}
+      scrolled={cell.get("scrolled")}
       output={output}
       project_id={project_id}
       directory={directory}
@@ -196,7 +196,7 @@ function ControlColumn({ actions, cell, id }) {
       <OutputToggle
         actions={actions}
         id={id}
-        scrolled={cell.get("scrolled", true)}
+        scrolled={cell.get("scrolled")}
       >
         {prompt}
       </OutputToggle>

src/packages/jupyter/redux/actions.ts

@@ -482,7 +482,7 @@ export abstract class JupyterActions extends Actions<JupyterStoreState> {
             id,
             [property]: !cell.get(
               property,
-              property == "scrolled" ? true : false, // default scrolled to true
+              property == "scrolled" ? false : true, // default scrolled to false
             ),
           },
           false,