(core) deal with write access for attachments

Summary:
Attachments are a special case for granular access control. A user is now allowed to read a given attachment if they have read access to a cell containing its id. So when a user writes to a cell in an attachment column, it is important that they can only write the ids of cells to which they have access. This diff allows a user to add an attachment id in a cell if:

  * The user already has access to that a attachment via some existing cell, or
  * The user recently updated the attachment, or
  * The attachment change is from an undo/redo of a previous action attributed to that user

Test Plan: Updated tests

Reviewers: georgegevoian, dsagal

Reviewed By: georgegevoian, dsagal

Differential Revision: https://phab.getgrist.com/D3681

app/common/ActionBundle.ts

@@ -3,6 +3,7 @@
  * See also EncActionBundle for how these are packaged for encryption.
  */
 
+import {ApplyUAOptions} from 'app/common/ActiveDocAPI';
 import {DocAction, UserAction} from 'app/common/DocActions';
 import {RowCounts} from 'app/common/DocUsage';
 
@@ -50,6 +51,7 @@ export function getEnvContent<Content>(items: Array<EnvContent<Content>>): Conte
 export interface UserActionBundle {
   info: ActionInfo;
   userActions: UserAction[];
+  options?: ApplyUAOptions;
 }
 
 // ActionBundle as received from the sandbox. It does not have some action metadata, but does have