chore(Ref): use component from Stardust UI

[layershifter]

This PR is a part of convergence effort between Semantic UI React & Stardust UI.

🔮 Ref component is reexported from Stardust UI

Stardust UI has the same Ref component as Semantic UI. To simplify maintenance we will support Ref component only under Stardust.

Docs for this component will be also removed from Semantic UI, but still will be available under Stardust: https://stardust-ui.github.io/react/components/ref/definition

These changes should not affect you as SUIR user, however.

😨 Possible breaking changes

Things below were never advertised as public API, but should be mentioned:

• TypeScript interfaces StrictRefProps, RefFindNodeProps, StrictRefFindNodeProps, RefForwardProps, StrictRefForwardProps are no longer exported.
• RefFindNode & RefForward components are no longer exported.

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Also bumps react-popper to latest.

[codecov-io]

Codecov Report

Merging #3774 into master will decrease coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #3774      +/-   ##
==========================================
- Coverage   99.84%   99.83%   -0.01%     
==========================================
  Files         175      172       -3     
  Lines        3125     3101      -24     
==========================================
- Hits         3120     3096      -24     
  Misses          5        5

Impacted Files	Coverage Δ
src/elements/Button/Button.js	95.45% <ø> (ø)	⬆️
src/modules/Checkbox/Checkbox.js	100% <ø> (ø)	⬆️
src/modules/Sticky/Sticky.js	99.09% <ø> (ø)	⬆️
src/addons/Portal/PortalInner.js	100% <ø> (ø)	⬆️
src/modules/Dimmer/DimmerInner.js	100% <ø> (ø)	⬆️
src/addons/Portal/Portal.js	100% <ø> (ø)	⬆️
src/modules/Dropdown/Dropdown.js	100% <ø> (ø)	⬆️
src/modules/Modal/Modal.js	100% <ø> (ø)	⬆️
src/addons/TextArea/TextArea.js	100% <ø> (ø)	⬆️
src/behaviors/Visibility/Visibility.js	100% <ø> (ø)	⬆️
... and 5 more

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[montogeek]

@layershifter Sorry for mention you here, What does it mean "convergence effort between Semantic UI React & Stardust UI."? StardustUI provides the JS/component part and SemanticUI the style/look and feel part? It is to make the core lightweight?

[layershifter]

@montogeek

Stardust UI was forked from SUIR, in the current state components there have a bit different API, design and ideas. To clarify, Stardust is more accessible, uses CSS-in-JS for styles and has some API changes in shorthands that were implemented based on consumers feedback and our experience. However, there are also caveats, it's less stable, supports less features and don't offer other themes than Teams.

However, there is a lot of things that can and should be shared. At least to simplify maintenance, first it's a Ref component that is totally same. Next things will be probably shorthand factories and some React hooks for internal implementation that will allow to get accessibility improvements and simplify components like Dropdown.

StardustUI provides the JS/component part and SemanticUI the style/look and feel part?

In the end we will probably end with this, but it's a long ride 🚗 Currently, just converge utils.

[montogeek]

Sounds really good, specially the CSSinJS use, overriding SUI specificity is hard.