Remove nano_view_queue from unscoped MDM commands list query (#45674)

Drops `nano_view_queue` from the Apple branch of the unscoped commands
list and joins the underlying `nano_*` tables directly. The view's
definition bakes in `ORDER BY q.priority DESC, q.created_at`, which
MySQL re-materializes on every query — the outer `LIMIT` can't push past
it, so each unscoped list call pays the full sort cost over the
post-join row set regardless of page size.

This is the same join shape the host-scoped path already uses (see
`listMDMCommandsByHostIdentifier`), so I followed that pattern. Column
output is identical to what the view was producing, which is why no test
updates were needed — all the existing `TestListMDMCommands*` cases pass
without modification.

Scope of this PR is just the hot caller. The view itself isn't touched.
The issue notes other call sites (`vpp.go`, `apple_mdm.go`) still go
through it, and that dropping the `ORDER BY` from the view's definition
would be the durable fix. Both feel like separate PRs — the audit work
for other call sites is non-trivial, and modifying the view risks
silently breaking any consumer that relied on its implicit ordering.
Happy to follow up on either.

Refs #44509.

# Checklist for submitter

- [x] Input is properly validated (no new user input paths; same
parameterized query shape)
- Tests: existing `TestListMDMCommands*` coverage exercises this path
and passes unchanged. No new tests added — see rationale above.
- Changes file: not applicable, internal query refactor with no
user-visible behavior change.


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## Summary by CodeRabbit

## Bug Fixes
* Updated Mobile Device Management command status reporting to ensure
accurate status and timestamp information.

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Co-authored-by: Jordan Montgomery <elijah.jordan.montgomery@gmail.com>

server/datastore/mysql/mdm.go

@@ -61,24 +61,29 @@ END AS platform
 // These subqueries are only used for the all-hosts listing; host-scoped
 // requests go through listMDMCommandsByHostIdentifier instead.
 func getMDMCommandsSubqueries() (appleStmt, windowsStmt string) {
+	// Apple branch joins the underlying nano_* tables directly instead of
+	// going through the nano_view_queue VIEW. The view bakes
+	// "ORDER BY q.priority DESC, q.created_at" into its definition, which
+	// MySQL re-materializes on every query — defeating the outer LIMIT and
+	// forcing a full join + sort regardless of page size. The host-scoped
+	// path (see listMDMCommandsByHostIdentifier) already bypasses the view
+	// for the same reason.
 	appleStmt = `
 SELECT
-    nvq.id as host_uuid,
-    nvq.command_uuid,
-    COALESCE(NULLIF(nvq.status, ''), 'Pending') as status,
-    COALESCE(nvq.result_updated_at, nvq.created_at) as updated_at,
-    nvq.request_type as request_type,
+    q.id AS host_uuid,
+    c.command_uuid,
+    COALESCE(NULLIF(r.status, ''), 'Pending') AS status,
+    COALESCE(r.updated_at, q.created_at) AS updated_at,
+    c.request_type,
     h.hostname,
     h.team_id,
-    nvq.name
-FROM
-    nano_view_queue nvq
-INNER JOIN
-    hosts h
-ON
-    nvq.id = h.uuid
-WHERE
-   nvq.active = 1
+    c.name
+FROM nano_enrollment_queue q
+    INNER JOIN nano_commands c ON q.command_uuid = c.command_uuid
+    INNER JOIN hosts h ON h.uuid = q.id
+    LEFT JOIN nano_command_results r
+        ON r.command_uuid = q.command_uuid AND r.id = q.id
+WHERE q.active = 1
 `
 
 	// The Windows sub-statement is itself a UNION ALL of two branches: one