Is any plan to develop 'utf8_slice_charunits' like existed 'utf8_slice_codeunits'

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The issue names utf8_slice_charunits and utf8_slice_codeunits but provides no source file, test, or implementation scope. Start by locating the existing utf8_slice_codeunits entry point and reviewing the requested feature in the ASF JIRA process; done would require an agreed scope plus implementation and tests.

Written by the indexing model from the issue text.