fix: expand the source id regex item part

Signed-off-by: Anupam Kumar <kyteinsky@gmail.com>

Author: kyteinsky

lib/Service/MetadataService.php

@@ -85,7 +85,8 @@ public function getEnrichedProviders(): array {
 	}
 
 	private function getIdFromSource(string $sourceId): string {
-		if (!preg_match('/^[^: ]+__[^: ]+: (\d+)$/', $sourceId, $matches)) {
+		// note the ":" in the item id part
+		if (!preg_match('^[a-zA-Z0-9_-]+__[a-zA-Z0-9_-]+: ([a-zA-Z0-9:-])+$', $sourceId, $matches)) {
 			throw new \InvalidArgumentException("Invalid source id $sourceId");
 		}
 		return $matches[1];