Ide crashes when one selects `Show all ports` for a latter added composition

[caioaamaral]

I was just following syskit tutorial when I got on this error.

How to reproduce:

• First, I've opened ide with:
  syskit ide -r gazebo models/compositions/arm_cartesian_control_wdls.rb

• Then, I've added the Model File: arm_cartesian_constant_control_wdls.rb and finally clicked on Show all ports.

• After that, Ide GUI immediately crashes with the following trace:

= undefined method `dataflow_options' for #<Syskit::GUI::ModelViews::RubyTaskContext:0x00005566288b8830> (NoMethodError)
= Backtrace
| 
|   ~/workspaces/tutorial/tools/syskit/lib/syskit/gui/component_network_base_view.rb:340:in `method_missing'
|   ~/workspaces/tutorial/tools/syskit/lib/syskit/gui/component_network_base_view.rb:340:in `buttonClicked'
|   ~/workspaces/tutorial/tools/metaruby/lib/metaruby/gui/html/page.rb:318:in `qt_metacall'
|   ~/workspaces/tutorial/tools/metaruby/lib/metaruby/gui/html/page.rb:318:in `buttonClicked'
|   ~/workspaces/tutorial/tools/metaruby/lib/metaruby/gui/html/page.rb:318:in `pageLinkClicked'
|   ~/.local/share/autoproj/gems/ruby/2.7.0/bundler/gems/qtbindings-bfe173dd488d/lib/Qt/qtruby4.rb:479:in `qt_metacall'
|   ~/.local/share/autoproj/gems/ruby/2.7.0/bundler/gems/qtbindings-bfe173dd488d/lib/Qt/qtruby4.rb:479:in `method_missing'
|   ~/.local/share/autoproj/gems/ruby/2.7.0/bundler/gems/qtbindings-bfe173dd488d/lib/Qt/qtruby4.rb:479:in `exec'
|   ~/workspaces/tutorial/gui/vizkit/lib/vizkit/vizkit.rb:146:in `exec'
|   ~/workspaces/tutorial/tools/syskit/bin/syskit:67:in `<main>'