test: port 915/949 module-global access carriers to corpus fixtures

915_arr_module_index_run.c -> r915_arr_mod_idx0 (run), r915_arr_mod_
  idx2 (run-exit 1), r915_arr_mod_idx4 (run-exit 6); the single-file
  rows were already owned by r915_arr_local_* + test-data-byteid.
949_xmod_fnptr_const_run.c -> r949_xmod_fnptr_const_table (run),
  r949_xmod_fnptr_wrong_sig, r949_xmod_fnptr_nonfn_dotted (error
  'not assignable' both stages).

The 915 module rows upgrade from 994-delegated to per-fixture cs==ww
byte identity; 949's 2-file -I tree was not load-bearing — inline
packages exercise the same N_DOT &mod.fn mangle (mafn(leaf, module)).

internal/wwfixture/types.ww

@@ -1,13 +1,13 @@
 package wwfixture;
 
 def protocolversion: i32 = 1;
-def corpuscount: i32 = 1673;
-def errorcount: i32 = 341;
+def corpuscount: i32 = 1679;
+def errorcount: i32 = 343;
 def compilecount: i32 = 18;
-def runcount: i32 = 207;
-def runexitcount: i32 = 1107;
-def nativecount: i32 = 3346;
-def corpushash: str = "a071db5169fe671d40b72d9967caaea053b505f300e64f787f3627ca0f340f5c";
+def runcount: i32 = 209;
+def runexitcount: i32 = 1109;
+def nativecount: i32 = 3358;
+def corpushash: str = "0b3b997170a14de5d526e0d7ce7d5de3c1a33d85db7d029a26e6e01651857b5d";
 
 type directive = enum i32 {
 	ERROR = 0,