chat(build): fix broken installer on macOS (#2973)

Signed-off-by: Jared Van Bortel <jared@nomic.ai>

gpt4all-chat/qml/MyMiniButton.qml

@@ -0,0 +1,48 @@
+import QtCore
+import QtQuick
+import QtQuick.Controls
+import QtQuick.Controls.Basic
+import Qt5Compat.GraphicalEffects
+
+Button {
+    id: myButton
+    padding: 0
+    property color backgroundColor: theme.iconBackgroundDark
+    property color backgroundColorHovered: theme.iconBackgroundHovered
+    property alias source: image.source
+    property alias fillMode: image.fillMode
+    implicitWidth: 30
+    implicitHeight: 30
+    contentItem: Text {
+        text: myButton.text
+        horizontalAlignment: Text.AlignHCenter
+        color: myButton.enabled ? theme.textColor : theme.mutedTextColor
+        font.pixelSize: theme.fontSizeLarge
+        Accessible.role: Accessible.Button
+        Accessible.name: text
+    }
+
+    background: Item {
+        anchors.fill: parent
+        Rectangle {
+            anchors.fill: parent
+            color: "transparent"
+        }
+        Image {
+            id: image
+            anchors.centerIn: parent
+            visible: false
+            mipmap: true
+            sourceSize.width: 16
+            sourceSize.height: 16
+        }
+        ColorOverlay {
+            anchors.fill: image
+            source: image
+            color: myButton.hovered ? backgroundColorHovered : backgroundColor
+        }
+    }
+    Accessible.role: Accessible.Button
+    Accessible.name: text
+    ToolTip.delay: Qt.styleHints.mousePressAndHoldInterval
+}