test(test-impact): make the conditional-path fixture a valid coverage map

A coverage map must cover every function it lists, and five of the seven
variants covered only function 1, so the map failed to parse and the test
stopped at its setup ("map is NULL") with the fix applied or not. The
changed function (0) is now covered by the setup row of a suite no runner
registers, so alpha's own rows stay quiet and each variant still reaches
alpha by exactly one path. RED with the selection fix reverted (alpha
lacks CONDITIONAL), green with it.

Signed-off-by: Martin Vogel <martin.vogel.tech@gmail.com>

tests/test_test_impact.c

@@ -1720,9 +1720,12 @@ TEST(test_selection_inventory_ambiguity_and_conditionals_use_whole_suite) {
  * runner that lacks it then tolerates its absence. Its cases and registrations
  * are unconditional here, so only the runner registration can say so. */
 TEST(test_selection_conditionally_registered_suite_is_conditional_on_every_path) {
+    /* A map covers every function it lists, so the changed one (0) is covered
+     * by the setup of a suite no runner registers: alpha's own rows stay
+     * quiet and each variant reaches alpha by its one path. */
     static const char *quiet_rows = "alpha:*\tcomplete\t\t1\nalpha:stat\tcomplete\t\t1\n"
                                     "alpha:cov\tcomplete\t\t1\nalpha:changed\tcomplete\t\t1\n"
-                                    "alpha:quiet\tcomplete\t\t1\n";
+                                    "alpha:quiet\tcomplete\t\t1\nomega:*\tcomplete\t\t0\n";
     struct {
         const char *rows;
         bool admitted;
@@ -1730,7 +1733,8 @@ TEST(test_selection_conditionally_registered_suite_is_conditional_on_every_path)
         unsigned path;
     } variants[] = {
         {"alpha:*\tincomplete\tlost setup\t1\nalpha:stat\tcomplete\t\t1\n"
-         "alpha:cov\tcomplete\t\t1\nalpha:changed\tcomplete\t\t1\nalpha:quiet\tcomplete\t\t1\n",
+         "alpha:cov\tcomplete\t\t1\nalpha:changed\tcomplete\t\t1\nalpha:quiet\tcomplete\t\t1\n"
+         "omega:*\tcomplete\t\t0\n",
          true, false, false, false, CBM_TEST_SELECT_SETUP_UNKNOWN},
         {"alpha:*\tcomplete\t\t0\nalpha:stat\tcomplete\t\t1\n"
          "alpha:cov\tcomplete\t\t1\nalpha:changed\tcomplete\t\t1\nalpha:quiet\tcomplete\t\t1\n",