TF-1486 Add insert image in signature on mobile/tablet

(cherry picked from commit 3411ecf28c01651a3747e67dd797885a10b532fe)

core/lib/presentation/extensions/color_extension.dart

@@ -147,6 +147,7 @@ extension AppColor on Color {
   static const colorCloseButton = Color(0xFF818C99);
   static const colorDropShadow = Color(0x0F000000);
   static const colorBackgroundKeyboard = Color(0xFFD2D5DC);
+  static const colorBackgroundKeyboardAndroid = Color(0xFFF2F0F4);
   static const colorShadowLayerBottom = Color(0x29000000);
   static const colorShadowLayerTop = Color(0x1F000000);
   static const colorDividerHorizontal = Color(0x1F000000);

core/lib/presentation/views/text/type_ahead_form_field_builder.dart

@@ -74,6 +74,7 @@ class _TypeAheadFormFieldBuilderState<T> extends State<TypeAheadFormFieldBuilder
         autofillHints: widget.autofillHints,
         keyboardType: widget.keyboardType,
         decoration: widget.decoration,
+        focusNode: widget.focusNode,
         textDirection: _textDirection,
         onChanged: (value) {
           widget.onTextChange?.call(value);