ecflow: fix compilation with Intel classic compilers (#42622)

var/spack/repos/builtin/packages/ecflow/ctsapi_cassert.patch

@@ -0,0 +1,10 @@
+--- a/Base/src/cts/CtsApi.hpp	2024-02-10 02:32:48.001444742 +0000
++++ b/Base/src/cts/CtsApi.hpp	2024-02-10 02:33:09.161119010 +0000
+@@ -16,6 +16,7 @@
+ //============================================================================
+ #include <string>
+ #include <vector>
++#include <cassert>
+
+ #include "CheckPt.hpp"
+ #include "NodeFwd.hpp"

var/spack/repos/builtin/packages/ecflow/package.py

@@ -68,6 +68,9 @@ class Ecflow(CMakePackage):
     # Requirement to use the Python3_EXECUTABLE variable
     depends_on("cmake@3.16:", type="build")
 
+    # https://github.com/JCSDA/spack-stack/issues/1001
+    patch("ctsapi_cassert.patch", when="@5.11.4 %intel@2021")
+
     @when("@:4.13.0")
     def patch(self):
         version = str(self.spec["python"].version[:2])