kdeconnct: patch .desktop to use a valid MimeType

closes #21311

srcpkgs/kdeconnect/patches/desktop-mime-type.patch

@@ -0,0 +1,11 @@
+--- data/org.kde.kdeconnect_open.desktop	2020-04-16 18:26:00.000000000 +0200
++++ -	2020-04-27 15:17:01.945065691 +0200
+@@ -86,7 +86,7 @@
+ Comment[x-test]=xxOpen on a connected device using KDE Connectxx
+ Comment[zh_CN]=通过 KDE Connect 在已连接的设备上打开
+ Comment[zh_TW]=使用 KDE 連線於連線裝置中開啟
+-MimeType=*/*;
++MimeType=application/octet-stream;
+ Exec=kdeconnect-handler --open %U
+ Icon=kdeconnect
+ Type=Service

srcpkgs/kdeconnect/template

@@ -1,7 +1,7 @@
 # Template file for 'kdeconnect'
 pkgname=kdeconnect
 version=20.04.0
-revision=1
+revision=2
 wrksrc="kdeconnect-kde-${version}"
 build_style=cmake
 hostmakedepends="extra-cmake-modules qt5-host-tools pkg-config