[MM-52943] fix: enable Elasticsearch properly on restart (#23806)

* fix: enable elasticsearch properly on restart

* use correct method under IsEnabled

* Empty-Commit to retrigger workflow

---------

Co-authored-by: Antonis Stamatiou <stamatiou.antonis@gmail.com>
Co-authored-by: Mattermost Build <build@mattermost.com>

server/platform/services/searchengine/bleveengine/bleve.go

@@ -219,6 +219,10 @@ func (b *BleveEngine) Stop() *model.AppError {
 	return b.closeIndexes()
 }
 
+func (b *BleveEngine) IsEnabled() bool {
+	return b.IsIndexingEnabled()
+}
+
 func (b *BleveEngine) IsActive() bool {
 	return atomic.LoadInt32(&b.ready) == 1
 }