PR #99323 - sql: add default_text_search_config

[cockroach-teamcity]

Exalate commented:

Related PR: cockroachdb/cockroach#99323
Commit: cockroachdb/cockroach@ba28e85
Epic: CRDB-22357

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Release note (sql change): add the default_text_search_config variable
for compatibility with the single-argument variants of the text search
functions to_tsvector, to_tsquery, phraseto_tsquery, and
plainto_tsquery, which use the value of default_text_search_config
instead of expecting one to be included as in the two-argument variants.
The default value of this setting is 'english'.

Jira Issue: DOC-7282