ui: change height of column selector

Previosuly, it was hard to identify there was more
items on the columns selector, since the scrollbar is confugured
by the user and might not show up right away (it will show once
you hover with mouse and scroll).
This commit changes the height of the filter, making part of
the next options to show up, hinting there is more options
when scrolling.

Part Of cockroachdb#91763

Release note (ui change): Change the height of column selector,
so it can hint there are more options to be selected once
scrolled.

pkg/ui/workspaces/cluster-ui/src/columnsSelector/columnsSelector.tsx

@@ -81,6 +81,10 @@ const customStyles = {
     position: "relative",
     boxShadow: "none",
   }),
+  menuList: (provided: any) => ({
+    ...provided,
+    maxHeight: "310px",
+  }),
   option: (provided: any, state: any) => ({
     ...provided,
     backgroundColor: "white",