`explosionGenerator` tag doesn't work for `Melee`

This issue has no description.

The issue provides no file, test, or reproduction details. Search the C++ engine sources for `explosionGenerator` and the `Melee` handling path, then reproduce the tag behavior before tracing how the tag is applied. Done means `explosionGenerator` works for `Melee` and the behavior is covered by an appropriate test or reproducible verification.

Written by the indexing model from the issue text.