Backed enums lose their backing type after PDepend's AST cache round-trip

Backed enums lose their backing type after PDepend's AST cache round-trip: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). When I run PDepend on a project that contains PHP 8.1 enums, the analysis results are not stable across runs — once the AST cache is involved…