Fix path.data as comma separated string (#76202) #79272
Merged
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For multiple data paths, there are several allowed varieties of
specifcying the paths. The yaml list forms, both single and multi line,
are allowed, but another form is a string containing commas that is
parsed as a list. This latter form was broken recently by the
refactoring of path.data parsing to emit deprecation warnings for MDP.
This commit fixes the comma separated string case and adds a test.
closes #76181