Tabs: ensure to have folder icons for remote folders

KIO::iconForUrl relies on filename to find the icon for remote files.
Appending / at the end of the filename allows it to interpret it as
a folder.

This causes inconsistent tab icons.

To reproduce:

Open in a tab a url on a smb or sftp folder, i.e sftp:/my-server/photos

Before:
Icon is a cloud.

After:
Icon is a folder

Previously a folder icon could be presented if the tab was first opened
with a url with a trailing /

1 files changed, 2 insertions, 1 deletions

diff --git a/src/tests/dolphinmainwindowtest.cpp b/src/tests/dolphinmainwindowtest.cpp
index 40f8f6bcd..b40d3dbbf 100644
--- a/src/tests/dolphinmainwindowtest.cpp
+++ b/src/tests/dolphinmainwindowtest.cpp
@@ -211,7 +211,8 @@ void DolphinMainWindowTest::testOpenInNewTabTitle()
     QCOMPARE(tabWidget->count(), 2);
     QVERIFY(tabWidget->tabText(0) != tabWidget->tabText(1));
     if (!tabWidget->tabIcon(0).isNull() && !tabWidget->tabIcon(1).isNull()) {
-        QVERIFY(tabWidget->tabIcon(0).name() != tabWidget->tabIcon(1).name());
+        QCOMPARE(QStringLiteral("inode-directory"), tabWidget->tabIcon(0).name());
+        QCOMPARE(QStringLiteral("inode-directory"), tabWidget->tabIcon(1).name());
     }
 }