fix: don't camelize attributes for plain elements

[rchl]

Plain (native) elements should not have their props camelized as then the attribute names won't match the type definition if the element has those. For example path element defines type for the stroke-width attribute but since Volar "camelizes" the attribute name by default, it triggers type error due to strokeWidth not matching the stroke-width key.

I suppose the ElementTypes.ELEMENT type does not necessarily mean "native element" but hopefully it's close enough and correct to not camelize attributes by default for those elements.

[johnsoncodehk]

I found that the type definition for SVGAttributes still has many props that are camelized (allowReorder, attributeName, attributeType, autoReverse...), and the current changes will not recognize those props.

Maybe we need to set a whitelist for the default value of vueCompilerOptions.htmlAttributes to solve this problem.

[rchl]

I found that the type definition for SVGAttributes still has many props that are camelized (allowReorder, attributeName, attributeType, autoReverse...), and the current changes will not recognize those props.

Seems like that's how the spec intended. Notice that those are listed like that in https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute so the user should write them literally like that and Vue Volar should not do any transformations.

[johnsoncodehk]

@rchl that makes sense, thanks!