Use consistent message (done) to signal test success. NFC (#26824)

We had some tests using `done` and others using `success`, and since
`done` was more popular I decided to standardize on that.

As a followup, I think we can perhaps make this the default for the
`do_runf` method which will simplify things further.

Author: sbc100

test/browser/test_4gb.cpp

@@ -33,6 +33,6 @@ int main() {
     printf("wrote %d in JS, read %d from C\n", 2 * i, fromC);
   }
 
-  puts("success");
+  puts("done");
 }
 

test/browser/test_4gb.out

@@ -124,4 +124,4 @@ wrote 58 in JS, read 58 from C
 test 30
 wrote 30 in C, read 30 from JS
 wrote 60 in JS, read 60 from C
-success
+done

test/browser/test_4gb_fail.c

@@ -26,5 +26,5 @@ int main() {
   // We should have allocated less than 4GB (we can't get to exactly 4GB
   // since we started with some small amount, and then add 512MB chunks).
   assert(num_allocations < 8);
-  puts("success");
+  puts("done");
 }

test/browser/test_4gb_fail.out

@@ -1,2 +1,2 @@
 failed to allocate any more
-success
+done

test/browser/test_glfw_events.c

@@ -242,6 +242,6 @@ int main() {
     printf("test failed\n");
     return 1;
   }
-  printf("success\n");
+  printf("done\n");
   return 0;
 }

test/core/pthread/test_pthread_dylink.c

@@ -33,6 +33,6 @@ int main(int argc, char* argv[]) {
   pthread_create(&thread, NULL, thread_main, NULL);
   pthread_join(thread, NULL);
 
-  printf("success\n");
+  printf("done\n");
   return 0;
 }

test/core/pthread/test_pthread_dylink.out

@@ -1 +1 @@
-success
+done

test/core/pthread/test_pthread_dylink_tls.c

@@ -69,5 +69,5 @@ int main() {
   assert(save_side == get_side_tls());
   assert(save_main == get_main_tls());
 
-  printf("success\n");
+  printf("done\n");
 }

test/core/pthread/test_pthread_dylink_tls.out

@@ -20,4 +20,4 @@ side_tls direct  : 52 43
 main_tls  value  : 20 11
 main_tls direct  : 20 11
 
-success
+done

test/core/test_autodebug.c

@@ -14,6 +14,6 @@ int main() {
   double d = printf("some numbers: %d %f\n", 42, 2.18281828);
   uint64_t j = printf("some  more: %lld %lf\n", 1337ll, 3.14159);
   printf("counts: %lld %lf\n", j, d);
-  puts("success");
+  puts("done");
   return 0;
 }