fix error path in precompilepkgs (#53606)

this was accidentally left when porting this from Pkg.jl

(cherry picked from commit 427da5c)

base/precompilation.jl

@@ -436,7 +436,7 @@ function precompilepkgs(pkgs::Vector{String}=String[]; internal_call::Bool=false
             # TODO: actually handle packages from other envs in the stack
             return
         else
-            error("No direct dependencies outside of the sysimage found matching $(repr([p.name for p in pkgs]))")
+            error("No direct dependencies outside of the sysimage found matching $(pkgs)")
         end
     end