Projection fails with `The given key 'BId' was not present in the dictionary` if `AOnlyProperty` is present in the destination `ADto`

Originally filed with AutoMapper: https://github.com/AutoMapper/AutoMapper/issues/4389

### Description

Using the setup described in the attached gist, the query (see gist) fails with the attached stack trace.

However, removing the `ADto.AOnlyProperty` property causes the query to succeed.

### Code

https://gist.github.com/FelixZY/a98b1531c8eabd96d30dd4729be44cdd

### Stack traces

```
Error Message:
System.Collections.Generic.KeyNotFoundException : The given key 'BId' was not present in the dictionary.
Stack Trace:
at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
at Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression.ProjectionMemberToIndexConvertingExpressionVisitor.Visit(Expression expression)
at System.Linq.Expressions.ExpressionVisitor.VisitUnary(UnaryExpression node)
at Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression.ProjectionMemberToIndexConvertingExpressionVisitor.Visit(Expression expression)
at System.Linq.Expressions.ExpressionVisitor.VisitMemberAssignment(MemberAssignment node)
at System.Linq.Expressions.ExpressionVisitor.VisitMemberBinding(MemberBinding node)
at System.Linq.Expressions.ExpressionVisitor.Visit[T](ReadOnlyCollection`1 nodes, Func`2 elementVisitor)
at System.Linq.Expressions.ExpressionVisitor.VisitMemberInit(MemberInitExpression node)
at Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression.ProjectionMemberToIndexConvertingExpressionVisitor.Visit(Expression expression)
at Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression.ApplyProjection(Expression shaperExpression, ResultCardinality resultCardinality, QuerySplittingBehavior querySplittingBehavior)
at Microsoft.EntityFrameworkCore.Query.Internal.SelectExpressionProjectionApplyingExpressionVisitor.VisitExtension(Expression extensionExpression)
at Microsoft.EntityFrameworkCore.Query.RelationalQueryTranslationPostprocessor.Process(Expression query)
at Pomelo.EntityFrameworkCore.MySql.Query.ExpressionVisitors.Internal.MySqlQueryTranslationPostprocessor.Process(Expression query)
at Microsoft.EntityFrameworkCore.Query.QueryCompilationContext.CreateQueryExecutor[TResult](Expression query)
at Microsoft.EntityFrameworkCore.Storage.Database.CompileQuery[TResult](Expression query, Boolean async)
at Microsoft.EntityFrameworkCore.Query.Internal.QueryCompiler.CompileQueryCore[TResult](IDatabase database, Expression query, IModel model, Boolean async)
at Microsoft.EntityFrameworkCore.Query.Internal.QueryCompiler.<>c__DisplayClass12_0`1.b__0()
at Microsoft.EntityFrameworkCore.Query.Internal.CompiledQueryCache.GetOrAddQuery[TResult](Object cacheKey, Func`1 compiler)
at Microsoft.EntityFrameworkCore.Query.Internal.QueryCompiler.ExecuteAsync[TResult](Expression query, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.Query.Internal.EntityQueryProvider.ExecuteAsync[TResult](Expression expression, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.EntityFrameworkQueryableExtensions.ExecuteAsync[TSource,TResult](MethodInfo operatorMethodInfo, IQueryable`1 source, Expression expression, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.EntityFrameworkQueryableExtensions.ExecuteAsync[TSource,TResult](MethodInfo operatorMethodInfo, IQueryable`1 source, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.EntityFrameworkQueryableExtensions.SingleAsync[TSource](IQueryable`1 source, CancellationToken cancellationToken)
at AutoMapperExample.Example() in [REDACTED]
at System.Threading.Tasks.Task.<>c.b__128_0(Object state)
```

### Include provider and version information

EF Core version: 8.0.1
Database provider: Pomelo.EntityFrameworkCore.MySql 8.0.0-beta.2
Target framework: net8.0
Operating system: `mcr.microsoft.com/devcontainers/dotnet:8.0` running on Ubuntu 22.04.3 LTS (jammy) (64-bit)
IDE: VSCode/dotnet cli