Support value conversion for ReadOnlyIPAddress

[roji]

Note that after this PR, the SQL gets generated with a useless conversion: WHERE [b].[Address] = CAST(N'127.0.0.1' AS nvarchar(45)). We should be able to remove the convert node when its type mapping is identical to its operands, but for this to be correct we need to be able to fully compare type mappings... Leaving this for now (@smitpatel do we have this tracked/discussed somewhere?)

Fixes #21159

[smitpatel]

Somewhat related issue is #15586

Though in this case the reason for extra Cast is different than any other existing issue we have. Either investigate and avoid it or file an issue with details.

Also add a test which covers the code path.

[roji]

@smitpatel added test for this, will open a separate issue to remove the convert node, as it isn't an actual problem etc.

[ghost]

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[roji]

Issue: #25597

[ghost]

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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.

[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.