patch 8.2.1445: Vim9: function expanded name is cleared when sourcing again

Problem:    Vim9: function expanded name is cleared when sourcing a script
            again.
Solution:   Only clear the expanded name when deleting the function.
            (closes #6707)
diff --git a/src/version.c b/src/version.c
index 415a7cc..3ae2c72 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1445,
+/**/
     1444,
 /**/
     1443,