App polish part 2 (#1118)

- Fix sheet backgrounds in dark mode.
- Fix background colours for reaction buttons.
- Reply view layout.
- Update separator colours.
- Don't show sender name/avatar in DMs.
- Fix inconsistent line heights with formatted body text.
- Use plain text for reply
- Increase tappable size of collapsed state changes button.
- Blockquote layout and text colour.
- Tap to expand the topic in room details.
- Change the topic and security font size in room details.
- Add cancel button when inviting someone to an existing room.
- Reword Add Friends to Add People in start chat screen.
- Update compound.

DesignKit/Package.swift

@@ -12,7 +12,7 @@ let package = Package(
         .library(name: "DesignKit", targets: ["DesignKit"])
     ],
     dependencies: [
-        .package(url: "https://github.com/vector-im/compound-ios.git", revision: "d59c317362beba940baa43d6aacdd357e208048d"),
+        .package(url: "https://github.com/vector-im/compound-ios.git", revision: "e8b35fdd8c4008079dfce203e63bf7a05582d7b9"),
         .package(url: "https://github.com/vector-im/element-design-tokens.git", exact: "0.0.3"),
         .package(url: "https://github.com/siteline/SwiftUI-Introspect.git", from: "0.1.4")
     ],