uiux(Chat): ensure chat input gets focus when changing views and channels

Fixes #804

ui/app/AppLayouts/Chat/ChatColumn.qml

@@ -19,6 +19,15 @@ StackLayout {
     property bool isConnected: false
     property string contactToRemove: ""
 
+    property var onActivated: function () {
+        chatInput.textInput.forceActiveFocus(Qt.MouseFocusReason)
+    }
+
+    Component.onCompleted: {
+        chatInput.textInput.forceActiveFocus(Qt.MouseFocusReason)
+    }
+    
+
     Layout.fillHeight: true
     Layout.fillWidth: true
     Layout.minimumWidth: 300
@@ -175,6 +184,7 @@ StackLayout {
         Connections {
             target: chatsModel
             onActiveChannelChanged: {
+                chatInput.textInput.forceActiveFocus(Qt.MouseFocusReason)
                 suggestions.clear()
                 for (let i = 0; i < chatsModel.suggestionList.rowCount(); i++) {
                   suggestions.append({

ui/app/AppLayouts/Chat/ChatLayout.qml

@@ -9,6 +9,10 @@ SplitView {
     id: chatView
     handle: SplitViewHandle {}
 
+    property var onActivated: function () {
+        chatColumn.onActivated()
+    }
+
     Connections {
         target: applicationWindow
         onSettingsLoaded: {

ui/app/AppMain.qml

@@ -191,6 +191,11 @@ RowLayout {
         Layout.alignment: Qt.AlignLeft | Qt.AlignTop
         Layout.fillHeight: true
         currentIndex: tabBar.currentIndex
+        onCurrentIndexChanged: {
+            if (typeof this.children[currentIndex].onActivated === "function") {
+                this.children[currentIndex].onActivated()
+            }
+        }
 
         ChatLayout {
             id: chatLayoutContainer