patch 8.2.4361: Vim9: some tests fail

Problem:    Vim9: some tests fail.
Solution:   Fix the tests, mostly by removing "s:".
diff --git a/src/testdir/test_normal.vim b/src/testdir/test_normal.vim
index 2ed6a80..cd987ab 100644
--- a/src/testdir/test_normal.vim
+++ b/src/testdir/test_normal.vim
@@ -684,10 +684,10 @@
     bw!
 
     # Test for using a script-local function name
-    def s:LocalOpFunc(type: string): void
+    def LocalOpFunc(type: string): void
       g:LocalOpFuncArgs = [type]
     enddef
-    &opfunc = s:LocalOpFunc
+    &opfunc = LocalOpFunc
     g:LocalOpFuncArgs = []
     normal! g@l
     assert_equal(['char'], g:LocalOpFuncArgs)