Improve SQL transactions (#6713)

To avoid some locks.
Fix https://github.com/FreshRSS/FreshRSS/issues/6686
Might be some regressions since https://github.com/FreshRSS/FreshRSS/pull/6632

app/Controllers/feedController.php

@@ -800,9 +800,9 @@ class FreshRSS_feed_Controller extends FreshRSS_ActionController {
 	 */
 	public static function actualizeFeedsAndCommit(?int $feed_id = null, ?string $feed_url = null, ?int $maxFeeds = null, ?SimplePie $simplePiePush = null): array {
 		$entryDAO = FreshRSS_Factory::createEntryDao();
-		$entryDAO->beginTransaction();
 		[$nbUpdatedFeeds, $feed, $nbNewArticles, $feedsCacheToRefresh] = FreshRSS_feed_Controller::actualizeFeeds($feed_id, $feed_url, $maxFeeds, $simplePiePush);
 		if ($nbNewArticles > 0) {
+			$entryDAO->beginTransaction();
 			FreshRSS_feed_Controller::commitNewEntries();
 		}
 		if (count($feedsCacheToRefresh) > 0) {
@@ -852,10 +852,10 @@ class FreshRSS_feed_Controller extends FreshRSS_ActionController {
 				FreshRSS_category_Controller::refreshDynamicOpmls();
 			}
 			$entryDAO = FreshRSS_Factory::createEntryDao();
-			$entryDAO->beginTransaction();
 			[$nbUpdatedFeeds, $feed, $nbNewArticles, $feedsCacheToRefresh] = self::actualizeFeeds($id, $url, $maxFeeds);
 			if (!$noCommit) {
 				if ($nbNewArticles > 0) {
+					$entryDAO->beginTransaction();
 					FreshRSS_feed_Controller::commitNewEntries();
 				}
 				$feedDAO = FreshRSS_Factory::createFeedDao();