Stop transforming textAlign:start/end

[necolas]

Describe the issue

StyleX converts textAlign:start/end into CSS like this, which means those properties don't work correctly inside subtrees using the dir prop. This is a relatively urgent issue internally.

We should remove this transform. (A broader task is to remove the legacy RTL selectors for style sheets altogether.)

Expected behavior

textAlign:start/end work correctly

Steps to reproduce

1. textAlign:end
2. See style sheet changed end to right and scoped it to html[dir]

Test case

No response

Additional comments

No response

[nmn]

AFAIK, this only happens in the legacy-expand-shorthands config which is what we use internally. (If this happens in any other config that would be a very urgent issue)

Internally we depend on this behaviour for older browsers but I think there is a way to add fallback styles for older browsers while resolving this issue.

[necolas]

end and start have been available since Chrome 1, so I don't think we need to do anything to these values - https://developer.mozilla.org/en-US/docs/Web/CSS/text-align#browser_compatibility

[nmn]

This is news to me. Let me make this change immediately then.