Add hack.diff for mod_managed

src/mod/languages/mod_managed/Makefile.am

@@ -41,5 +41,6 @@ swigclean: clean
 freeswitch_wrap.cxx:
 	swig -I../../../include -v -O -c++ -csharp -namespace FreeSWITCH.Native -dllimport mod_managed -DSWIG_CSHARP_NO_STRING_HELPER freeswitch.i
 	rm -f ./managed/swig.cs
+	patch -s -p0 -i managed/hack.diff
 	cat *.cs > ./managed/swig.cs
 	rm -f *.cs

src/mod/languages/mod_managed/managed/hack.diff

@@ -0,0 +1,11 @@
+--- switch_event.cs.old	2025-06-18 14:42:04.451534270 +0000
++++ switch_event.cs	2025-06-18 14:43:13.731741625 +0000
+@@ -40,7 +40,7 @@
+     Dispose(false);
+   }
+ 
+-  public void Dispose() {
++  public virtual void Dispose() {
+     Dispose(true);
+     global::System.GC.SuppressFinalize(this);
+   }