Align checksum dav property with desktop client parsing

Signed-off-by: Julius Härtl <jus@bitgrid.net>

apps/dav/lib/Connector/Sabre/ChecksumList.php

@@ -38,7 +38,7 @@ class ChecksumList implements XmlSerializable {
 	private array $checksums;
 
 	public function __construct(string $checksum) {
-		$this->checksums = explode(',', $checksum);
+		$this->checksums = explode(' ', $checksum);
 	}
 
 	/**

lib/public/Files/FileInfo.php

@@ -256,7 +256,10 @@ interface FileInfo {
 	public function getOwner();
 
 	/**
-	 * Get the stored checksum for this file
+	 * Get the stored checksum(s) for this file
+	 *
+	 * Checksums are stored in the format TYPE:CHECKSUM, here may be multiple checksums separated by a single space
+	 * e.g. MD5:d3b07384d113edec49eaa6238ad5ff00 SHA1:f1d2d2f924e986ac86fdf7b36c94bcdf32beec15
 	 *
 	 * @return string
 	 * @since 9.0.0