ocamlPackages.phylogenetics: run full test suite

As of upstream commit
https://github.com/biocaml/phylogenetics/commit/a107e96fa64fecb75a9e855293b2822196540b31
, the full tests using `bppsuite`, although barely longer than the short
tests, were not being run.

Changed files
+5
pkgs
development
ocaml-modules
phylogenetics
+5
pkgs/development/ocaml-modules/phylogenetics/default.nix
···
printbox-text
];
+
checkPhase = ''
+
runHook preCheck
+
dune build @app/fulltest
+
runHook postCheck
+
'';
doCheck = true;
meta = with lib; {