https-dns-proxy: bugfix: prevent erros from boot()

* fixes https://github.com/openwrt/packages/issues/22674
* rename resolver_health_check to is_resolver_running for readability
* reorder functions in the init file by name

Signed-off-by: Stan Grishin <stangri@melmac.ca>

net/https-dns-proxy/patches/020-src-options.c-add-version.patch

@@ -5,7 +5,7 @@
    return SW_VERSION;
  #else
 -  return "2023.10.10-atLeast";  // update date sometimes, like 1-2 times a year
-+  return "2023-10-25-1";  // update date sometimes, like 1-2 times a year
++  return "2023-10-25-3";  // update date sometimes, like 1-2 times a year
  #endif
  }