bug(source-mssql): CDC check crashes on localized SQL Server Agent service names

## Summary

CDC-enabled `source-mssql` connection checks crash on localized (non-English) SQL Server installations with:

```
java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0
```

## Root cause

`assertSqlServerAgentRunning` (in `MsSqlSourceMetadataQuerier.kt`) looks up the SQL Server Agent service with a hard-coded `LIKE 'SQL Server Agent%'`. German installations name the service `SQL Server-Agent` (hyphen), so the query returns zero rows and the connector indexes into an empty result while validating that the Agent is "Running".

## Impact

Users on localized SQL Server instances cannot set up CDC replication at all, even when the Agent is running correctly. `source-mssql` is a certified connector.

## History

- Previously reported in #66582, which was closed as completed even though the fix never landed.
- Community PR #72867 proposed widening the `LIKE` pattern. That PR was closed on 2026-07-27 as part of a stale-PR cleanup (no maintainer review in ~5 months, no test covering localized service names) — the underlying bug was not disputed, hence this issue.

## Suggested fix

Match the service name without assuming English punctuation/wording, and fail with a clear error message (rather than an index-out-of-bounds) when no Agent row is found. A regression test with a localized service name would prevent the next recurrence.

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Filed at the request of @jimruppert while triaging the community PR backlog.
[Devin session](https://app.devin.ai/sessions/12011a91f2d541f0826863290e5ad30c)

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**Internal Tracking:** https://github.com/airbytehq/oncall/issues/13170

Start in MsSqlSourceMetadataQuerier.kt at assertSqlServerAgentRunning and trace the service lookup and result handling. Locate the source-mssql metadata or connection-check tests, then add coverage for the German SQL Server-Agent name and the no-row case. Done means localized CDC connection checks no longer crash and report a clear failure when no Agent row is found.

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