Fix bugs in SQL Server bulk insert management

[roji]

For the parameter check, we previously added the parameters only when the pending bulk insert commands were applied; this is why they weren't being taken into account for the parameter limit check. The fix here is to move parameter adding to when the bulk insert command is added, just like any normal command; only the SQL addition is deferred.

Note that this won't support fancy bulk strategies, such as a single array parameter for multiple rows in PostgreSQL. But other things have to be done for that anyway, and this seems like an acceptable fix for now.

Fixes #27840
Fixes #28712

[AndriySvyryd]

We probably should log to Debug the reason why a batch is broken up, but this can be done later

[roji]

but this can be done later

Like everything involving a new logging event, this now has a hard dependency on #28603 🤣

#28717

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[ghost]

Apologies, while this PR appears ready to be merged, I've been configured to only merge when all checks have explicitly passed. The following integrations have not reported any progress on their checks and are blocking auto-merge:

1. Azure Pipelines

These integrations are possibly never going to report a check, and unblocking auto-merge likely requires a human being to update my configuration to exempt these integrations from requiring a passing check.

Give feedback on this

From the bot dev team

We've tried to tune the bot such that it posts a comment like this only when auto-merge is blocked for exceptional, non-intuitive reasons. When the bot's auto-merge capability is properly configured, auto-merge should operate as you would intuitively expect and you should not see any spurious comments.

Please reach out to us at fabricbotservices@microsoft.com to provide feedback if you believe you're seeing this comment appear spuriously. Please note that we usually are unable to update your bot configuration on your team's behalf, but we're happy to help you identify your bot admin.