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Refactor DOMProperty and CSSProperty (#26513)
This is a step towards getting rid of the meta programming in DOMProperty and CSSProperty. This moves isAttributeNameSafe and isUnitlessNumber to a separate shared modules. isUnitlessNumber is now a single switch instead of meta-programming. There is a slight behavior change here in that I hard code a specific set of vendor-prefixed attributes instead of prefixing all the unitless properties. I based this list on what getComputedStyle returns in current browsers. I removed Opera prefixes because they were [removed in Opera](https://dev.opera.com/blog/css-vendor-prefixes-in-opera-12-50-snapshots/) itself. I included the ms ones mentioned [in the original PR](5abcce5). These shouldn't really be used anymore anyway so should be pretty safe. Worst case, they'll fallback to the other property if you specify both. Finally I inline the mustUseProperty special cases - which are also the only thing that uses propertyName. These are really all controlled components and all booleans. I'm making a small breaking change here by treating `checked` and `selected` specially only on the `input` and `option` tags instead of all tags. That's because those are the only DOM nodes that actually have those properties but we used to set them as expandos instead of attributes before. That's why one of the tests is updated to now use `input` instead of testing an expando on a `div` which isn't a real use case. Interestingly this also uncovered that we update checked twice for some reason but keeping that logic for now. Ideally `multiple` and `muted` should move into `select` and `audio`/`video` respectively for the same reason. No change to the attribute-behavior fixture. DiffTrain build for [73deff0](73deff0)
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