Change SiteExtension reference (#19218)

[BrennanConroy]

No description provided.

[wtgodbe]

Looks good, and sounds like it was already validated in the master branch w/ an internal build. We should merge this as soon as it's green

[BrennanConroy]

Great, looks like AzDo builds aren't being triggered now...

[wtgodbe]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).

[ghost]

Hello @BrennanConroy!

Because this pull request has the auto-merge label, I will be glad to assist with helping to merge this pull request once all check-in policies pass.

Do note that I've been instructed to only help merge pull requests of this repository that have been opened for at least 60 minutes, a condition that will be fulfilled in about 26 minutes. No worries though, I will be back when the time is right! 😉

p.s. you can customize the way I help with merging this pull request, such as holding this pull request until a specific person approves. Simply @mention me (@msftbot) and give me an instruction to get started! Learn more here.

[ghost]

Apologies, while this PR appears ready to be merged, it looks like release/5.0-preview1 is a protected branch and I have not been granted permission to perform the merge.

[ghost]

Apologies, while this PR appears ready to be merged, it looks like release/5.0-preview1 is a protected branch and I have not been granted permission to perform the merge.