Launchpad View UX Improvements

[justinrobots]

General:

• [x] Replace "Compare Pull Request" hover icon button with "Open in Worktree". (keep both in context menu)
• [ ] Remember the collapsed/expanded states of sections
• [ ] If the branch you are on has a launchpad item, expand that by default.

For Draft PRs:

• [x] Duplicate Draft PRs for which the user has a review request into "Needs your review" section
• [ ] Display a draft icon for Draft PRs in the "Needs your review" section

For "Other" section:

• [ ] Sort PRs to put current user's PRs at the top of the list

For pinned items:

• [ ] When an item is pinned, the "Pinned" category doesn't appear in the Launchpad View until a full reload. It should appear immediately with the pinned item.
• [ ] Pinned items should appear above non-pinned items in their respective categories.