The types generated for Modal props indicates that placeholder is
available because @react/types prior to v18.2.43 has placeholder as an
attribute in HTMLAttributes. Beginning with @react/types v18.2.43, the
placeholder attribute has been removed from HTMLAttributes. As a result,
projects that consume this package but are themselves on @react/types
v18.2.43 or newer no longer recognize placeholder as an optional
property; they see it as stemming from these Modal props rather than
JSX.IntrinsicElements['div'], and that it is required, not optional.

Patch Modal to manually omit placeholder from available properties
without updating packages, which would require a more significant lift.

Ref: DefinitelyTyped/DefinitelyTyped#67170

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