* Allow multiple field names/patterns for (path_)(un)match (#66364)
Arrays of patterns are now allowed for dynamic_templates in the match,
unmatch, path_match and path_unmatch fields. DynamicTemplate has been modified to
support List<String> for these fields. The patterns can be either simple wildcards
or regex. As with previous functionality, when match_pattern="regex", simple wildcards
will be flagged with an error, but when match_pattern="simple", using regular expressions
in the match will not throw an error.
One new error pathway was added: if a user specifies a list of non-strings for
one of these pattern fields (e.g., "match": [10, false]) a MapperParserException
will be thrown.
A dynamic_template yamlRestTest was added. This is a BWC change, so the REST test
that uses arrays of patterns is limited to v8.9 and above.
Closes#66364.
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