Table improvements (#6958)

* Header toggling, resizable columns

* Allow all blocks in table cells, disable column resizing in read-only

* Fixed dynamic scroll shadows

* Refactor, scroll styling

* fix scrolling, tweaks

* fix: Table layout lost on sort

* fix: Caching of grip decorators

* refactor

* stash

* fix first render shadows

* stash

* First add column grip, styles

* Just add column/row click handlers left

* fix: isTableSelected for single cell table

* Refactor mousedown handlers

* fix: 'Add row before' command missing on first row

* fix overflow on rhs

* fix: Error clicking column grip when menu is open

* Hide table controls when printing

* Restore table header background

* fix: Header behavior when adding columns and rows at the edges

* Tweak header styling

* fix: Serialize and parsing of column attributes when copy/pasting
fix: Column width is lost when changing column alignment

shared/editor/lib/chainTransactions.ts

@@ -1,16 +1,21 @@
 import { Command, Transaction } from "prosemirror-state";
 
-export default function chainTransactions(...commands: Command[]): Command {
+/**
+ * Chain multiple commands into a single command and collects state as it goes.
+ *
+ * @param commands The commands to chain
+ * @returns The chained command
+ */
+export function chainTransactions(
+  ...commands: (Command | undefined)[]
+): Command {
   return (state, dispatch): boolean => {
     const dispatcher = (tr: Transaction): void => {
       state = state.apply(tr);
       dispatch?.(tr);
     };
     const last = commands.pop();
-    const reduced = commands.reduce(
-      (result, command) => result || command(state, dispatcher),
-      false
-    );
-    return reduced && last !== undefined && last(state, dispatch);
+    commands.map((command) => command?.(state, dispatcher));
+    return last !== undefined && last(state, dispatch);
   };
 }