patch 8.2.1746: Vim9: cannot use "fina" for "finally"

Problem:    Vim9: Cannot use "fina" for "finally". (Naruhiko Nishino)
Solution:   Specifically check for "fina". (closes #7020)
diff --git a/src/testdir/test_trycatch.vim b/src/testdir/test_trycatch.vim
index 1f1681f..9f670f7 100644
--- a/src/testdir/test_trycatch.vim
+++ b/src/testdir/test_trycatch.vim
@@ -37,7 +37,7 @@
         if loops == 2
           try
             Xpath 'f' . loops
-          finally
+          final
             Xpath 'g' . loops
           endtry
         endif
@@ -49,19 +49,20 @@
   Xpath 'i'
 endfunc
 
+" Also try using "fina" and "final" and "finall" as abbraviations.
 func T25_G()
   if 1
     try
       Xpath 'A'
       call T25_F()
       Xpath 'B'
-    finally
+    fina
       Xpath 'C'
     endtry
   else
     try
       Xpath 'D'
-    finally
+    finall
       Xpath 'E'
     endtry
   endif