feat: reinitialize agents when a prebuilt workspace is claimed (#17475)

This pull request allows coder workspace agents to be reinitialized when
a prebuilt workspace is claimed by a user. This facilitates the transfer
of ownership between the anonymous prebuilds system user and the new
owner of the workspace.

Only a single agent per prebuilt workspace is supported for now, but
plumbing has already been done to facilitate the seamless transition to
multi-agent support.

---------

Signed-off-by: Danny Kopping <dannykopping@gmail.com>
Co-authored-by: Danny Kopping <dannykopping@gmail.com>

coderd/database/queries/presets.sql

@@ -1,5 +1,6 @@
 -- name: InsertPreset :one
 INSERT INTO template_version_presets (
+	id,
 	template_version_id,
 	name,
 	created_at,
@@ -7,6 +8,7 @@ INSERT INTO template_version_presets (
 	invalidate_after_secs
 )
 VALUES (
+	@id,
 	@template_version_id,
 	@name,
 	@created_at,