[code-infra] Remove unnecessary ref from HighlightedCode
component
#46151
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Fixes this warning in development mode:
When
plainStyle
is true, the root becomesReact.Fragment
, which doesn't support theref
prop.Since no parent component uses a ref on
HighlightedCode
, I removedforwardRef
. I also checked this in MUI X and Toolpad.Also made sure
other
is spread only when usingMarkdownElement
.