Fix history navigation in vi_insert mode

lib/reline/line_editor.rb

@@ -1327,7 +1327,7 @@ class Reline::LineEditor
       end
     end
     @line = '' unless @line
-    if @config.editing_mode_is?(:emacs)
+    if @config.editing_mode_is?(:emacs, :vi_insert)
       @cursor_max = @cursor = calculate_width(@line)
       @byte_pointer = @line.bytesize
     elsif @config.editing_mode_is?(:vi_command)