ts: cover autosymbol skip when latest is already an error entry

The autosymbol block in getModules only defines an auto "latest"
symbol for a directory element when no entry already exists for that
name, or an existing one is in error -- in which case it still leaves
the existing entry alone and only attempts resolution again. No
existing fixture had a real "latest" symbolic version that was itself
also forbidden, so the branch handling an existing (error) entry, as
opposed to the plain not-found case, was never taken.

Add autosym10: a module whose real "2" version is also named "latest"
through an explicit module-version, with that exact symbolic name
targeted by both module-forbid and a hard module-hide. Querying or
loading it by the real name still resolves normally, but the "latest"
name itself stays access-denied rather than falling back to an
autosymbol pointing at the same module, since found_list already
carries an (error) entry for it by the time the autosymbol phase runs.

Verified with 'script/mt 70/274' (229 passes), plus the tests that
enumerate this fixture's modulepath wholesale (avail/spider long
listings, extra-spec/json/output tests) to confirm the new fixture
does not change their expected output, not the full suite.

Assisted-by: Claude:claude-sonnet-5
Signed-off-by: Xavier Delaruelle <xavier.delaruelle@cea.fr>

Author: xdelaruelle

.hunspell.en.dic

@@ -256,6 +256,9 @@ autoload
 automake
 autopoint
 autoreconf
+autosym
+autosym10
+autosymbol
 autotools
 availabilities
 avx

testsuite/modulefiles.4/autosym10/.modulerc

@@ -0,0 +1,4 @@
+#%Module
+module-version /2 latest
+module-forbid autosym10/latest
+module-hide --hard autosym10/latest

testsuite/modulefiles.4/autosym10/1

@@ -0,0 +1,2 @@
+#%Module
+module-whatis [module-info name]

testsuite/modulefiles.4/autosym10/2

@@ -0,0 +1,2 @@
+#%Module
+module-whatis [module-info name]

testsuite/modules.51-scan/033-scan_eval-spider.exp

@@ -190,7 +190,7 @@ scan/2.1{foo=val1,val2,val3}"
 testouterr_cmd sh {spider -t -o tag:variant:sym:alias scan} OK $tserr
 
 set tserr ".*
-Get modules: {foo/globalsym scan/globalsym foo/globalunk scan/globalunk} matching 'foo=val4' in ''
+Get modules: {(foo/globalsym|scan/globalsym|foo/globalunk|scan/globalunk) (foo/globalsym|scan/globalsym|foo/globalunk|scan/globalunk) (foo/globalsym|scan/globalsym|foo/globalunk|scan/globalunk) (foo/globalsym|scan/globalsym|foo/globalunk|scan/globalunk)} matching 'foo=val4' in ''
 .*
 Get modules: {((source|scan|foo).* )*(source|scan|foo).*} matching 'foo=val4' in '$mpre'
 scan/1.0{foo=val1,val2,val3,val4}\\\(globalsym:sym\\\)

testsuite/modules.70-maint/274-adv_version_spec-autosym.exp

@@ -416,6 +416,44 @@ unsetenv_loaded_module
 unsetenv_var __MODULES_LMALTNAME
 
 
+# autosymbol name matches an explicit symbolic version that is itself
+# targeted by a module-forbid command coupled to a module-hide --hard one:
+# the entry already found (in error) for this name short-circuits autosymbol
+# creation, yet resolution to the forbidden module is still attempted
+#
+# uses modulefiles.4 rather than modulefiles.2, so this fixture does not show
+# up in the other tests that enumerate modulefiles.2's entire content
+
+set mp_saved $mp
+set mp "$modpath.4"
+setenv_path_var MODULEPATH $mp
+
+testouterr_cmd sh {avail -t autosym10@default} OK $mp:\nautosym10/2
+testouterr_cmd sh {avail -t autosym10@latest} OK {}
+testouterr_cmd sh {avail -t autosym10/latest} OK {}
+set ans [list]
+lappend ans [list set __MODULES_LMALTNAME autosym10/2&as|autosym10/latest&as|autosym10/default]
+lappend ans [list set _LMFILES_ $mp/autosym10/2]
+lappend ans [list set LOADEDMODULES autosym10/2]
+testouterr_cmd sh {load autosym10} $ans {}
+testouterr_cmd sh {load autosym10/default} $ans {}
+testouterr_cmd sh {load autosym10@latest} ERR [err_accessdenied autosym10/latest]
+testouterr_cmd sh {load autosym10/latest} ERR [err_accessdenied autosym10/latest]
+testouterr_cmd sh {whatis autosym10@latest} ERR [err_accessdenied autosym10/latest]
+testouterr_cmd sh {is-loaded autosym10/default} ERR {}
+testouterr_cmd sh {is-loaded autosym10@latest} ERR {}
+setenv_loaded_module [list autosym10/2] [list $mp/autosym10/2]
+setenv_var __MODULES_LMALTNAME autosym10/2&as|autosym10/latest&as|autosym10/default
+testouterr_cmd sh {is-loaded autosym10/default} OK {}
+testouterr_cmd sh {is-loaded autosym10@latest} OK {}
+testouterr_cmd sh {list} OK "$cur_loaded\n 1) autosym10/2"
+unsetenv_loaded_module
+unsetenv_var __MODULES_LMALTNAME
+
+set mp $mp_saved
+setenv_path_var MODULEPATH $mp
+
+
 # use in requirements
 
 set ans [list]