Fix span attributes & option propagation for transaction related spans

[lwc]

I noticed a couple of bugs when using this package:

• All span attributes are missing from sql:begin_transaction due to the execution order of multiple defers
• All transaction spans are missing TraceOptions

[odeke-em]

Awesome, thank you for this change @lwc! LGTM and perhaps this is the time for us to add such tests as the issue here was that span.End was getting invoked before attributes were added

[odeke-em]

I also updated your commit message to reflect the change, thank you again!

[odeke-em]

Wow for some reason Github registered this as my commit, my apologies @lwc! Something tripped out with the Github UI. However it is still attributed to you.

[lwc]

Thanks for the fast response! 👍