Fix component removal in component inspector

[azeey]

🦟 Bug fix

Summary

When clicking an object, the components of the previously selected objects get removed from the component inspector view. From example, if the world is currently selected, clicking on a model would remove the gravity component from the view. The mechanism that makes it work was broken when gz was removed from Q_ARG(sim::ComponentTypeId, typeId)); of

gz-sim/src/gui/plugins/component_inspector/ComponentInspector.cc

Line 922 in 60d4121

Q_ARG(sim::ComponentTypeId, typeId));

in #1794. This was also generating the warning:

[GUI] [Wrn] [Application.cc:845] [QT] QMetaObject::invokeMethod: No such method gz::sim::ComponentsModel::RemoveComponentType(gz::sim::ComponentTypeId)
Candidates are:
    RemoveComponentType(sim::ComponentTypeId)

We used to need invokeMethod in Update functions, but this is not the case anymore, so I went ahead and changed it to a regular function call.

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
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