[mono] Search for components using mono_dl_build_path (#54268)

It knows how to try various combinations of prefixes and suffixes on various
platforms.  In particular it knows to look for .dylib files on Apple platforms.

Fixes iOS simulator component search

Co-authored-by: Aleksey Kliger <alklig@microsoft.com>

src/mono/mono/metadata/components.c

@@ -140,14 +140,18 @@ try_load (const char* dir, const MonoComponentEntry *component, const char* comp
 {
  MonoDl *lib = NULL;
  char *path = NULL;
- path = g_module_build_path (dir, component_base_lib);
- if (path) {
+ void *iter = NULL;
+
+ while ((path = mono_dl_build_path (dir, component_base_lib, &iter))) {
  char *error_msg = NULL;
  lib = mono_dl_open (path, MONO_DL_EAGER | MONO_DL_LOCAL, &error_msg);
+ if (lib)
+ break;
  if (!lib) {
  mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_DLLIMPORT, "Component %s not found: %s", component->name, error_msg);
  }
  g_free (error_msg);
+ g_free (path);
  }
  if (lib)
  mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_DLLIMPORT, "Component %s found at %s", component->name, path);