test(application): extend ExcelJS read-workbook timeouts to 30s

The 'rejects worksheets that exceed the row limit' test took 6599ms on
the QNAP act_runner, overflowing the default 5000ms vitest timeout.
Writing and parsing MAX_DISPO_WORKBOOK_ROWS+1 rows via ExcelJS is slow
on constrained hardware. Extend timeout for all three writeWorkbook-
dependent tests (row limit, column limit) to 30s, matching the fix
already applied to excel.test.ts and workbook-export.test.ts.

packages/application/src/__tests__/read-workbook.test.ts

@@ -123,7 +123,7 @@ describe("readWorksheetMatrix", () => {
     await expect(readWorksheetMatrix(workbookPath, "Sheet1")).rejects.toThrow(
       `exceeds the ${MAX_DISPO_WORKBOOK_ROWS} row import limit`,
     );
-  });
+  }, 30000);
 
   it("rejects worksheets that exceed the column limit", async () => {
     const directory = await makeTempDirectory();
@@ -135,5 +135,5 @@ describe("readWorksheetMatrix", () => {
     await expect(readWorksheetMatrix(workbookPath, "Sheet1")).rejects.toThrow(
       `exceeds the ${MAX_DISPO_WORKBOOK_COLUMNS} column import limit`,
     );
-  });
+  }, 30000);
 });