Update storybook stories to latest story format

[essential-randomness]

Starting with Storybook v6, it is recommended to write stories using Component Story Format v3. Most (if not all) of our stories are using an outdated format, and we should change them.

This is a list of all the stories we currently have, they should all be in older formats. When a story is fixed, please tick it off.

Stories

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1. Blocks/200-SubscriptionBlock.stories.tsx
2. Blocks/100-RulesBlock.stories.tsx
3. Sidebar/104-SidebarSection.stories.tsx
4. Sidebar/102-TextSection.stories.tsx
5. Sidebar/100-BoardSidebar.stories.tsx
6. Sidebar/103-SectionsList.stories.tsx
7. Sidebar/101-TagsSection.stories.tsx
8. Experimental/Layout/101-BottomBar.stories.tsx
9. Experimental/Common/400-Reactions.stories.tsx
10. Post/102-PostHeader.stories.tsx
11. Post/200-Comment.stories.tsx
12. Post/103-PostFooter.stories.tsx
13. Post/101-Card.stories.tsx
14. Post/400-CommentEditor.stories.tsx
15. Post/100b-CompactPostThread.stories.tsx
16. Post/100c-PostQuote.stories.tsx
17. Post/200b-ChainComment.stories.tsx
18. Post/100-Post.stories.tsx
19. Post/300-PostEditor.stories.tsx
20. Buttons/400-PopupButtons.stories.tsx
21. Buttons/300-CircleButton.stories.tsx
22. Buttons/100-Button.stories.tsx
23. Buttons/200-IconButton.stories.tsx
24. Board/100-BoardsDisplay.stories.tsx
25. Board/101-BoardPreview.stories.tsx
26. Layout/200-Settings.stories.tsx
27. Layout/100-Layout.stories.tsx
28. Layout/102-MenuBar.stories.tsx
29. Legacy/Sidebar/15-LegacySidebar.stories.tsx
30. Legacy/Thread/LegacyThread.stories.tsx
31. User/100-User.stories.tsx
32. Tags/201-TagInput.stories.tsx
33. Tags/202-TagSuggestions.stories.tsx
34. Tags/100-Tags.stories.tsx
35. Tags/200-TagsInput.stories.tsx
36. Tags/101-Tag.stories.tsx
37. Feeds/100-Feeds.stories.tsx
38. Common/300-DropdownPreview.stories.tsx
39. Common/200-Toasts.stories.tsx
40. Common/100-Input.stories.tsx
41. SideMenu/101-BoardsMenuSection.stories.tsx
42. SideMenu/100-SideMenu.stories.tsx
43. SideMenu/200-PinnedMenu.stories.tsx
44. Thread/100-Thread.stories.tsx
45. Thread/101-CommentsThread.stories.tsx
46. Thread/102-ThreadPreview.stories.tsx

[essential-randomness]

Note: I would start this by making a list of all the storybook stories that have this issue. Fixing them all is probably not a "small annoyances" thing, and we can do a group effort if needed.