(A-cgnU+58F4): New abstract node.

(A-cgnU+58F4): New abstract node.
(U+58F4): Add `<-denotational' for A-cgnU+58F4; add
`<-denotational@usage' for A2-DJT-01907; add
`ideographic-structure@apparent/rightmost'; add `sound@ja/on'.
(UU+58F4): Add `ideographic-structure@apparent/rightmost'; unify
DJT-01907; add `<-interchangeable' for UU+8C4E.
(GT-K05309): Use `<-subsumptive' for UU+58F4 instead of
`<-denotational' for U+58F4.
(MJ009392): Add `ideographic-structure@apparent/rightmost'.
(A-U+58F4-itaiji-001): New abstract node; use `<-denotational' for
A-cgnU+58F4.
(U+58F4-itaiji-001): New character; use `<-denotational' for
A-U+58F4-itaiji-001.
(A2-DJT-01907): New abstract node.