Jinrui Zhang a04ec8ea00 Merged PR 1713380: [oss][test cleanup] test check for regex related case ...

### Description
[oss][test cleanup] test check for regex related case

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#### AI description  (iteration 1)
#### PR Classification
This pull request performs test cleanup by standardizing regex test cases.

#### PR Summary
The PR refactors multiple regex test files to improve consistency by renaming JSON keys and updating test string values and patterns.
- Files like `oss/internal/pg_documentdb_distributed/src/test/regress/expected/regex_options_index.out` and `.../sql/regex_options_core.sql` now use the key `msg` with updated regex patterns in place of the old key.
- Files such as `oss/internal/pg_documentdb_distributed/src/test/regress/expected/regex.out` (and the corresponding `/pgmongo` versions) change the key from `sku` to `b` and adjust description texts and Unicode values.
- SQL scripts in `.../sql/regex.sql` are updated accordingly to reflect these key renames and ensure accurate index creation and count validations.
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2025-07-09 18:56:11 +08:00

..

pg_documentdb_distributed

Merged PR 1713380: [oss][test cleanup] test check for regex related case

2025-07-09 18:56:11 +08:00

pg_documentdb_rum

Merged PR 1722022: [OSS] Introduce documentdb_rum under the internal folder

2025-07-09 18:56:11 +08:00