Tagged through the following for use by CLDR:
- cfd99f3... ICU-22143 Increase COMPACT_MAX_DIGITS from 15 to 20, needed for new ja data
- 99dee47... ICU-21959 add the uemoji feature to ICU Data Build Tool chapter
- a48ae42... ICU-22117 Replace uprv_strncpy() by uprv_memcpy()
- e4df304... ICU-21957 Update double-conversion to 256ac809561b756645e73ab7127c2aaaeabaa427