patch 9.1.0603: filetype: use correct extension for Dracula

Problem:  pattern detection for Dracula language uses "*lvs" and "*lpe".
          as there is no dot, those are not treated as extensions which
          they should (judging by 'runtime/syntax/dracula.vim' and
          common sense).
Solution: use "*.lvs" and "*.lpe" patterns (Evgeni Chasnovski)

closes: #15303

Signed-off-by: Evgeni Chasnovski <evgeni.chasnovski@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/filetype.vim

@@ -713,7 +713,7 @@ if has("fname_case")
 endif
 
 " Dracula
-au BufNewFile,BufRead *.drac,*.drc,*lvs,*lpe	setf dracula
+au BufNewFile,BufRead *.drac,*.drc,*.lvs,*.lpe	setf dracula
 
 " Datascript
 au BufNewFile,BufRead *.ds			setf datascript

src/testdir/test_filetype.vim

@@ -225,7 +225,7 @@ def s:GetFilenameChecks(): dict<list<string>>
              'psprint.conf', 'sofficerc', 'any/.config/lxqt/globalkeyshortcuts.conf', 'any/.config/screengrab/screengrab.conf',
              'any/.local/share/flatpak/repo/config', '.notmuch-config'],
     dot: ['file.dot', 'file.gv'],
-    dracula: ['file.drac', 'file.drc', 'filelvs', 'filelpe', 'drac.file', 'lpe', 'lvs', 'some-lpe', 'some-lvs'],
+    dracula: ['file.drac', 'file.drc', 'file.lvs', 'file.lpe', 'drac.file'],
     dtd: ['file.dtd'],
     dtrace: ['/usr/lib/dtrace/io.d'],
     dts: ['file.dts', 'file.dtsi', 'file.dtso', 'file.its', 'file.keymap'],

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    603,
 /**/
     602,
 /**/