Reapply "fix: Override start method of \Sabre\DAV\Server to remove exception output"

This reverts commit cb6840f.

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>

Author: kesselb

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

@@ -25,4 +25,27 @@ public function __construct($treeOrNode = null) {
 		self::$exposeVersion = false;
 		$this->enablePropfindDepthInfinity = true;
 	}
+
+	// Copied from 3rdparty/sabre/dav/lib/DAV/Server.php
+	// Should be them exact same without the exception output.
+	public function start(): void {
+		try {
+			// If nginx (pre-1.2) is used as a proxy server, and SabreDAV as an
+			// origin, we must make sure we send back HTTP/1.0 if this was
+			// requested.
+			// This is mainly because nginx doesn't support Chunked Transfer
+			// Encoding, and this forces the webserver SabreDAV is running on,
+			// to buffer entire responses to calculate Content-Length.
+			$this->httpResponse->setHTTPVersion($this->httpRequest->getHTTPVersion());
+
+			// Setting the base url
+			$this->httpRequest->setBaseUrl($this->getBaseUri());
+			$this->invokeMethod($this->httpRequest, $this->httpResponse);
+		} catch (\Throwable $e) {
+			try {
+				$this->emit('exception', [$e]);
+			} catch (\Exception $ignore) {
+			}
+		}
+	}
 }