(GT-K00764): Use `<-formed@component' instead of `<-formed'; add

(GT-K00764): Use `<-formed@component' instead of `<-formed'; add
U-00020B1E as a target of `<-formed@component'.
(U+20B1E-itaiji-001): New character; use `<-denotational@component'
for A-compU+7676.
(U-00024F31): Add `<-denotational@component' for A-compU+24F31; add
ideographic-structure; add `sound@ja/on/{kan|go}'; add representative
nodes.
(A-U+24F31-itaiji-001): New abstract node; add
`<-denotational@component' for A-compU+24F31.
(U+24F31-itaiji-001): New character; use `<-denotational' for
A-U+24F31-itaiji-001.
(A-compU+24F31): New abstract node.