[ABAC - Table Editor] Improvements on table editor and review feedback (#31125)

* reflect review comments

* update table editor

* adjust test limits

* reflect review comments

* MM-64376

* resolve conflicts

* address review comments

* fix merge conflict error

server/channels/api4/access_control.go

@@ -337,7 +337,7 @@ func unassignAccessPolicy(c *Context, w http.ResponseWriter, r *http.Request) {
 	}
 
 	if len(assignments.ChannelIds) != 0 {
-		appErr := c.App.UnAssignPoliciesFromChannels(c.AppContext, policyID, assignments.ChannelIds)
+		appErr := c.App.UnassignPoliciesFromChannels(c.AppContext, policyID, assignments.ChannelIds)
 		if appErr != nil {
 			c.Err = appErr
 			return