Get rid of new warnings in new AT tests (#9026)

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## What & why

We must not introduce new warnings - it breaks BCApps uptake

## Linked work

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Microsoft contributors: also link the ADO work item with "AB#<number>"
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Fixes
[AB#641121](https://dynamicssmb2.visualstudio.com/1fcb79e7-ab07-432a-a3c6-6cf5a88ba4a5/_workitems/edit/641121)

## How I validated this

- [ ] I read the full diff and it contains only changes I intended.
- [ ] I built the affected app(s) locally with no new analyzer warnings.
- [ ] I ran the change in Business Central and confirmed it behaves as
expected.
- [ ] I added or updated tests for the new behavior, or explained below
why none are needed.

**What I tested and the outcome** *(required — be specific: scenarios,
commands, screenshots for UI changes)*

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## Risk & compatibility

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Author: dcenic

src/Layers/AT/Tests/Local/VATSTAT.Codeunit.al

@@ -1610,8 +1610,8 @@ codeunit 144001 VATSTAT
     var
         PurchaseHeader: Record "Purchase Header";
         VATStatementLine: Record "VAT Statement Line";
-        VATStatementAT: Report "VAT Statement AT";
         Item: Record Item;
+        VATStatementAT: Report "VAT Statement AT";
         VATTotalRowNo: Code[10];
         VATBusPostingGroupCode: Code[20];
         VATProPostingGroupCode: Code[20];