Update Send button bg color (#5170)

* Update Send button bg color

Change the gradient bg to accent/rest.

* Tidy-up ComposerToolbar to match iOS 18 Figma.

Also simplifies the tests a bit.

* Add a .glassEffect to Compound's SendButton.

* Add a border to TimelineReplyView.

Also use the same sizes in both the message bubbles and the composer.

* Change icon size and container in message bubbles

- Container size = 36x36px
- Icon size = 24x24px

* Update icon of reply contents to be 24x24

* Update the VoiceMessageButton to match the designs.

* Adopt Liquid Glass in the ComposerToolbar.

* Generate and fix snapshots.

---------

Co-authored-by: Doug <douglase@element.io>

ElementX/Sources/Screens/RoomScreen/ComposerToolbar/ComposerToolbarModels.swift

@@ -109,6 +109,14 @@ struct ComposerToolbarViewState: BindableState {
         }
     }
     
+    var sendButtonMode: SendButton.Mode {
+        composerMode.isEdit ? .edit : .send
+    }
+    
+    var sendButtonAccessibilityLabel: String {
+        composerMode.isEdit ? L10n.actionConfirm : L10n.actionSend
+    }
+    
     var sendButtonDisabled: Bool {
         if !canSend {
             return true