Exception when secondary .opam with bad name exists while runnning build doc

Expected Behavior

No exception when doing build doc

Actual Behavior

Internal error, please report upstream including the contents of _build/log.
Description:
  ("[gen_rules] returned rules in a directory that is not a descendant of the directory it was called for",
  { dir = In_build_dir "default/_doc/_html/simple_httpd.chaml"
  ; example =
      Rule
        { targets =
            { files = set { "default/_doc/_html/simple_httpd/index.html" }
            ; dirs = set {}
            }
        }
  })
Raised at Stdune__Code_error.raise in file
  "otherlibs/stdune/src/code_error.ml", line 11, characters 30-62
Called from
  Dune_engine__Load_rules.Load_rules.Normal.make_rules_gen_result.(fun) in
  file "src/dune_engine/load_rules.ml", line 583, characters 12-53
Called from Fiber__Core.O.(>>|).(fun) in file "otherlibs/fiber/src/core.ml",
  line 250, characters 36-41
Called from Fiber__Scheduler.exec in file "otherlibs/fiber/src/scheduler.ml",
  line 73, characters 8-11
-> required by ("<unnamed>", ())
-> required by
   ("load-dir", In_build_dir "default/_doc/_html/simple_httpd.chaml")
-> required by
   ("build-alias",
   { dir = In_build_dir "default/_doc/_html/simple_httpd.chaml"
   ; name = "doc"
   })
-> required by ("<unnamed>", ())
-> required by
   ("build-alias", { dir = In_build_dir "default"; name = "doc" })
-> required by ("toplevel", ())

I must not crash.  Uncertainty is the mind-killer. Exceptions are the
little-death that brings total obliteration.  I will fully express my cases. 
Execution will pass over me and through me.  And when it has gone past, I
will unwind the stack along its path.  Where the cases are handled there will
be nothing.  Only I will remain.
make: *** [Makefile:27 : doc] Erreur 1 

Reproduction

Have to opam file x.opam and x.y.opam.

If this is not enough download simple_httpd, rename simple_httpd_chaml.opam in
simple_httpd.chaml.opam and run build doc or make doc

Specifications

• Version of dune (output of dune --version): 3.9.1
• Version of ocaml (output of ocamlc --version): 5.0.0 with flambda
• Operating system (distribution and version): debian 12

Reproduce the failure with both x.opam and x.y.opam present, using the simple_httpd example and build doc or make doc. Start by reading the rule-loading path named in src/dune_engine/load_rules.ml and inspect the generated path under default/_doc/_html. Done means the documentation build completes without the reported internal error.