annotations appears twice

[Hixie]

e.g. https://master-api.flutter.dev/flutter/painting/Decoration/lerpFrom.html:

[srawlins]

Widget.createElement looks pretty wild too. https://master-api.flutter.dev/flutter/widgets/Widget/createElement.html

This might be only for functions. The bug does not happen in mockito's deferToDefaultResponse, but does happen in observable's observed.

[srawlins]

Note that this bug is already live at api.flutter.dev: https://api.flutter.dev/flutter/widgets/Widget/createElement.html

Still haven't found what caused the regression.

[srawlins]

This bug seems to have been introduced before 66e11fd (2022-01-16). I'm not going to search back before then.

[parlough]

I guess it's likely #2600 which includes annotations as features, which are rendered, but annotations are still rendered as well.

I'm not sure the intended distinction between features and annotations, but I guess it makes sense for annotations to be rendered above the element description.

[srawlins]

Yeah I'm making a change which effectively does that, and adding testing, haha.

[srawlins]

Another screenshot of the broken code for posterity:

found at https://pub.dev/documentation/observable/latest/observable/Observable/observed.html

[srawlins]

If Flutter is keen on having this fix, it is found in dartdoc 6.1.5, cc @goderbauer @gspencergoog