IBM-858 alias name is missing on IBM00858 charset

On AIX 7.1.5 SP2, en_US.IBM-858 locale was added.
IBM00858 charset was available and it's on sun.nio.cs package.
But IBM-858 alias name is missing in IBM00858 charset.
Because of this issue, Java does not start with AIX's en_US.IBM-858 locale. [1] [2]

According to my checking, IBM code page charset should have following 4 type aliases:
cpXXX, ibmXXX, ibm-XXX, XXX
(XXX may be digit)

Following 12 charsets were missing above aliases:
ibm00858, ibm01140, ibm01141, ibm01142, ibm01143, ibm01144,
ibm01145, ibm01146, ibm01147, ibm01148, ibm01149, x-ibm833

Note:
IBM00858 charset was registered into IANA Character Sets. [3]

[1]
https://www.ibm.com/support/knowledgecenter/en/ssw_aix_71/com.ibm.aix.nlsgdrf/support_languages_locales.htm
[2]
https://www.ibm.com/support/knowledgecenter/en/ssw_aix_72/com.ibm.aix.nlsgdrf/support_languages_locales.htm
[3] https://www.iana.org/assignments/character-sets/character-sets.xhtml

Initial post:
https://mail.openjdk.java.net/pipermail/core-libs-dev/2019-March/058859.html