fix(frontends/lean/elaborator): synthesize metavars in `e` before trying to synthesize `reflected e`
fix(frontends/lean/elaborator): synthesize metavars in `e` before trying to synthesize `reflected e`

leanprover/lean,digama0/lean,avigad/lean,leanprover/lean,leanprover-community/lean,avigad/lean,fpvandoorn/lean,avigad/lean,leanprover/lean,Kha/lean,fpvandoorn/lean,avigad/lean,Kha/lean,dselsam/lean,Kha/lean,leanprover-community/lean,leanprover-community/lean,leodemoura/lean,dselsam/lean,digama0/lean,dselsam/lean,leodemoura/lean,leodemoura/lean,leanprover-community/lean,leanprover-community/lean,fpvandoorn/lean,leanprover/lean,leodemoura/lean,digama0/lean,Kha/lean,leodemoura/lean,Kha/lean,fpvandoorn/lean,leanprover-community/lean,dselsam/lean,fpvandoorn/lean,leanprover/lean,Kha/lean,fpvandoorn/lean,digama0/lean,leodemoura/lean,avigad/lean,digama0/lean,digama0/lean,avigad/lean,dselsam/lean,dselsam/lean,leanprover/lean