Improve gallery presentation/dismissal animation layering

Tusker/Views/Attachments/AttachmentsContainerView.swift

@@ -57,7 +57,6 @@ class AttachmentsContainerView: UIView {
     private func commonInit() {
         self.isUserInteractionEnabled = true
         self.layer.cornerRadius = 5
-        self.layer.masksToBounds = true
         
         createBlurView()
         createHideButton()

Tusker/Views/Profile Header/ProfileHeaderView.swift

@@ -66,8 +66,9 @@ class ProfileHeaderView: UIView {
         backgroundColor = .appBackground
         
         avatarContainerView.backgroundColor = .appBackground
-        avatarContainerView.layer.masksToBounds = true
         avatarContainerView.layer.cornerCurve = .continuous
+        // Set zPositions so the gallery presentation/dismissal animation looks correct.
+        avatarContainerView.layer.zPosition = 2
         avatarImageView.layer.masksToBounds = true
         avatarImageView.layer.cornerCurve = .continuous
         avatarImageView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(avatarPressed)))
@@ -75,6 +76,7 @@ class ProfileHeaderView: UIView {
         
         headerImageView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(headerPressed)))
         headerImageView.isUserInteractionEnabled = true
+        headerImageView.layer.zPosition = 1
         
         var config = UIButton.Configuration.plain()
         config.image = UIImage(systemName: "ellipsis")
@@ -83,9 +85,11 @@ class ProfileHeaderView: UIView {
         moreButton.addInteraction(UIPointerInteraction(delegate: self))
         moreButton.showsMenuAsPrimaryAction = true
         moreButton.isContextMenuInteractionEnabled = true
+        moreButton.layer.zPosition = 2
         
         followButton.setNeedsUpdateConfiguration()
         followButton.addInteraction(UIPointerInteraction(delegate: self))
+        followButton.layer.zPosition = 2
         
         displayNameLabel.font = UIFontMetrics(forTextStyle: .title1).scaledFont(for: .systemFont(ofSize: 24, weight: .semibold))
         displayNameLabel.adjustsFontForContentSizeCategory = true

Tusker/Views/Status/ConversationMainStatusCollectionViewCell.swift

@@ -131,6 +131,8 @@ class ConversationMainStatusCollectionViewCell: UICollectionViewListCell, Status
         pollView,
     ] as! [any StatusContentView], useTopSpacer: true).configure {
         $0.setContentHuggingPriority(.defaultLow, for: .vertical)
+        // So that during gallery presentation/dismissal animations, the attachment view appears over everything else.
+        $0.layer.zPosition = 1
     }
     
     let contentTextView =  StatusContentTextView().configure {

Tusker/Views/Status/TimelineStatusCollectionViewCell.swift

@@ -84,6 +84,8 @@ class TimelineStatusCollectionViewCell: UICollectionViewListCell, StatusCollecti
             metaIndicatorsView.trailingAnchor.constraint(equalTo: avatarImageView.trailingAnchor),
             metaIndicatorsTopConstraint,
         ])
+        // So that during gallery presentation/dismissal animations, the attachment view appears over everything else.
+        $0.layer.zPosition = 1
     }
     
     private static let avatarImageViewSize: CGFloat = 50