feat: Sidebar Improvements (#1862)

* wip

* refactor behaviorg

* stash

* simplify

app/components/Sidebar/components/ResizeBorder.js

@@ -1,6 +1,5 @@
 // @flow
 import styled from "styled-components";
-import ResizeHandle from "./ResizeHandle";
 
 const ResizeBorder = styled.div`
   position: absolute;
@@ -9,20 +8,6 @@ const ResizeBorder = styled.div`
   right: -6px;
   width: 12px;
   cursor: ew-resize;
-
-  ${(props) =>
-    props.$isResizing &&
-    `
-  ${ResizeHandle} {
-    opacity: 1;
-  }
-  `}
-
-  &:hover {
-    ${ResizeHandle} {
-      opacity: 1;
-    }
-  }
 `;
 
 export default ResizeBorder;