bug#69996: Broken OCaml packages (e.g. frama-c and binsec)

[pukkamustard]

As reported by Arnaud (off-list mail) some OCaml packages build fine but
seem to be broken.

Examples include `frama-c` and `binsec`:

```
guix shell frama-c -- frama-c
[kernel] Current source was: :0
  The full backtrace is:
  Raised at Dune_site_plugins__Plugins.lookup_and_summarize.loop.(fun) in file 
"otherlibs/dune-site/src/plugins/plugins.ml", line 237, characters 16-87
  Called from Dune_site_plugins__Plugins.load_gen in file 
"otherlibs/dune-site/src/plugins/plugins.ml", line 263, characters 39-69
  Called from Stdlib__List.iter in file "list.ml", line 110, characters 12-15
  Called from Stdlib__List.iter in file "list.ml", line 110, characters 12-15
  Called from Frama_c_kernel__Kernel.bootstrap_loader in file 
"src/kernel_services/plugin_entry_points/kernel.ml", line 933, characters 35-62
  Called from Frama_c_kernel__Cmdline.parse_and_boot in file 
"src/kernel_services/cmdline_parameters/cmdline.ml", line 894, characters 2-22
  Called from Frama_c_kernel__Cmdline.catch_toplevel_run in file 
"src/kernel_services/cmdline_parameters/cmdline.ml", line 233, characters 4-8
  
  Unexpected error (The library "frama-c-aorai.core" can't be found in the 
search paths "/gnu/store/psmc4940aa9bj23dddkglv0p2yhi05kn-ocaml-4.14.1/lib".).
  Please report as 'crash' at https://git.frama-c.com/pub/frama-c/issues
  Your Frama-C version is 27.1 (Cobalt).
  Note that a version and a backtrace alone often do not contain enough
  information to understand the bug. Guidelines for reporting bugs are at:
  https://git.frama-c.com/pub/frama-c/-/wikis/Guidelines-for-reporting-bugs
```

```
guix shell binsec -- binsec -v
Fatal error: exception The library "binsec.sse.checkct" can't be found in the 
search paths "/gnu/store/psmc4940aa9bj23dddkglv0p2yhi05kn-ocaml-4.14.1/lib".
```