celeritas: add patch when using geant4@10 (#38592)

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

@@ -107,6 +107,12 @@ class Celeritas(CMakePackage, CudaPackage, ROCmPackage):
     conflicts("+rocm", when="+vecgeom", msg="HIP support is only available with ORANGE")
     conflicts("^vecgeom+shared@1.2.0", when="+vecgeom +cuda")
 
+    patch(
+        "https://patch-diff.githubusercontent.com/raw/celeritas-project/celeritas/pull/830.patch?full_index=1",
+        sha256="9ac1929a95170b497aaac76f62146f313e4b31aea7271acac354270550d0d685",
+        when="@0.3.0 ^geant4@10",
+    )
+
     def cmake_args(self):
         define = self.define
         from_variant = self.define_from_variant