Jonne Ransijn 0de9818470 LibWeb: Remove most of the copying of CSS::Parser::ComponentValue ...

This class was being copied all over the place, however, most of these
cases can be easily prevented with `auto const&` or `NonnullRawPtr<>`.

It also didn't have a move constructor, causing `Vector` to copy on
every resize as well.

Removing all these copies results in an almost 15% increase in
performance for CSS parsing, as measured with callgrind.

2024-11-06 09:43:15 +00:00

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