Tag based functionality not added when using a spanner connection

[sdahps]

When using the library with a connection string it adds in two interceptors that are used to add a tag to underling commands among other things:

dotnet-spanner-entity-framework/Google.Cloud.EntityFrameworkCore.Spanner/Extensions/SpannerDbContextOptionsExtensions.cs

Line 123 in 8ef23f3

spannerOptionsAction?.Invoke(new SpannerDbContextOptionsBuilder(optionsBuilder));

However if we use a spanner connection directly these interceptors aren't added in, meaning this functionality doesn't work:

dotnet-spanner-entity-framework/Google.Cloud.EntityFrameworkCore.Spanner/Extensions/SpannerDbContextOptionsExtensions.cs

Lines 80 to 81 in 8ef23f3

	optionsBuilder.AddInterceptors(TimestampBoundHintCommandInterceptor.TimestampBoundHintInterceptor);
	optionsBuilder.AddInterceptors(TagHintCommandInterceptor.TagHintInterceptor);

Environment details

• Programming language: C#
• OS:
• Language runtime version: dotnet 10
• Package version: 3.10.0 / 4.0.0

Steps to reproduce

1. Use a spanner connection when setting up EF
2. Use WithRequestTag extension
3. Check whether spanner tag was applied
4. Making sure to follow these steps will guarantee the quickest resolution possible.