Update test baselines for EF Core 10 parameter naming convention

[Copilot]

EF Core 10 simplified SQL parameter naming from @__p_0 to @p (PR dotnet/efcore#35200). Test baselines in ComplexTypeQueryMySqlTest.cs were still using the old format, causing assertion failures.

Changes

• Updated 32 SQL baseline assertions in ComplexTypeQueryMySqlTest.cs to use @p instead of @__p_0
• Affects LIMIT/OFFSET parameter references in complex type query tests

Example

-@__p_0='1'
+@p='1'

 SELECT DISTINCT `c0`.`Id`, ...
 FROM (
     SELECT `c`.`Id`, ...
     FROM `Customer` AS `c`
     ORDER BY `c`.`Id`
-    LIMIT 18446744073709551610 OFFSET @__p_0
+    LIMIT 18446744073709551610 OFFSET @p
 ) AS `c0`

This is an upstream breaking change affecting all EF Core providers. Additional test files may require similar updates as they fail.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Fix @_p_0= issue</issue_title>
<issue_description>It seems there is a change in the sql generated. Investigate if it's some change we made or it's expected in the base. Compare to sql server, sqlite implementaions for .net core 10

[xUnit.net 00:00:34.06]     Pomelo.EntityFrameworkCore.MySql.FunctionalTests.Query.ComplexTypeQueryMySqlTest.Load_complex_type_after_subquery_on_entity_type(async: False) [FAIL]
[xUnit.net 00:00:34.06]       Assert.Equal() Failure: Strings differ
[xUnit.net 00:00:34.06]                   ↓ (pos 1)
[xUnit.net 00:00:34.06]       Expected: "@__p_0='1'\n\nSELECT DISTINCT `c0`.`Id`, `c"···
[xUnit.net 00:00:34.06]       Actual:   "@p='1'\n\nSELECT DISTINCT `c0`.`Id`, `c0`.`"···
[xUnit.net 00:00:34.06]                   ↑ (pos 1)
[xUnit.net 00:00:34.06]       Stack Trace:
[xUnit.net 00:00:34.06]            at Microsoft.EntityFrameworkCore.TestUtilities.TestSqlLoggerFactory.AssertBaseline(String[] expected, Boolean assertOrder, Boolean forUpdate)
[xUnit.net 00:00:34.06]         /home/runner/work/Pomelo.EntityFrameworkCore.MySql/Pomelo.EntityFrameworkCore.MySql/test/EFCore.MySql.FunctionalTests/Query/ComplexTypeQueryMySqlTest.cs(1170,0): at Pomelo.EntityFrameworkCore.MySql.FunctionalTests.Query.ComplexTypeQueryMySqlTest.AssertSql(String[] expected)
[xUnit.net 00:00:34.06]         /home/runner/work/Pomelo.EntityFrameworkCore.MySql/Pomelo.EntityFrameworkCore.MySql/test/EFCore.MySql.FunctionalTests/Query/ComplexTypeQueryMySqlTest.cs(141,0): at Pomelo.EntityFrameworkCore.MySql.FunctionalTests.Query.ComplexTypeQueryMySqlTest.Load_complex_type_after_subquery_on_entity_type(Boolean async)
[xUnit.net 00:00:34.06]         --- End of stack trace from previous location ---
[xUnit.net 00:00:34.06]       Output:
[xUnit.net 00:00:34.06]         ---- New Baseline -------------------------------------------------------------------
[xUnit.net 00:00:34.06]                 AssertSql(
[xUnit.net 00:00:34.06]         """
[xUnit.net 00:00:34.06]         @p='1'
[xUnit.net 00:00:34.06]         
[xUnit.net 00:00:34.06]         SELECT DISTINCT `c0`.`Id`, `c0`.`Name`, `c0`.`BillingAddress_AddressLine1`, `c0`.`BillingAddress_AddressLine2`, `c0`.`BillingAddress_Tags`, `c0`.`BillingAddress_ZipCode`, `c0`.`BillingAddress_Country_Code`, `c0`.`BillingAddress_Country_FullName`, `c0`.`OptionalAddress_AddressLine1`, `c0`.`OptionalAddress_AddressLine2`, `c0`.`OptionalAddress_Tags`, `c0`.`OptionalAddress_ZipCode`, `c0`.`OptionalAddress_Country_Code`, `c0`.`OptionalAddress_Country_FullName`, `c0`.`ShippingAddress_AddressLine1`, `c0`.`ShippingAddress_AddressLine2`, `c0`.`ShippingAddress_Tags`, `c0`.`ShippingAddress_ZipCode`, `c0`.`ShippingAddress_Country_Code`, `c0`.`ShippingAddress_Country_FullName`
[xUnit.net 00:00:34.06]         FROM (
[xUnit.net 00:00:34.06]             SELECT `c`.`Id`, `c`.`Name`, `c`.`BillingAddress_AddressLine1`, `c`.`BillingAddress_AddressLine2`, `c`.`BillingAddress_Tags`, `c`.`BillingAddress_ZipCode`, `c`.`BillingAddress_Country_Code`, `c`.`BillingAddress_Country_FullName`, `c`.`OptionalAddress_AddressLine1`, `c`.`OptionalAddress_AddressLine2`, `c`.`OptionalAddress_Tags`, `c`.`OptionalAddress_ZipCode`, `c`.`OptionalAddress_Country_Code`, `c`.`OptionalAddress_Country_FullName`, `c`.`ShippingAddress_AddressLine1`, `c`.`ShippingAddress_AddressLine2`, `c`.`ShippingAddress_Tags`, `c`.`ShippingAddress_ZipCode`, `c`.`ShippingAddress_Country_Code`, `c`.`ShippingAddress_Country_FullName`
[xUnit.net 00:00:34.06]             FROM `Customer` AS `c`
[xUnit.net 00:00:34.06]             ORDER BY `c`.`Id`
[xUnit.net 00:00:34.06]             LIMIT 18446744073709551610 OFFSET @p
[xUnit.net 00:00:34.06]         ) AS `c0`
[xUnit.net 00:00:34.06]         """);
[xUnit.net 00:00:34.06]         
[xUnit.net 00:00:34.06]         

```</issue_description>

<agent_instructions>Remember this is .net core 10</agent_instructions>

## Comments on the Issue (you are @copilot in this section)

<comments>
</comments>

• Fixes Fix @_p_0= issue #116

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