Storybook stories should use stable values

[MikeEdgar]

The messages table story currently uses a random value in the headers column, which results in changes being detected by Chromatic for each commit. The header should be updated to be a constant value to avoid changes due to value change.

console/ui/components/MessagesTable/MessagesTable.stories.tsx

Line 116 in 088a72f

random: `${Math.random()}`,