Move live httpbin.org test to xt/ so outages can't fail installs

t/example.t makes live HTTPS requests to httpbin.org during the default
test suite. Test::RequiresInternet only checks TCP reachability, so when
the service is up-but-unhealthy (e.g. a 503) the guard passes and the
assertions fail -- failing an otherwise-healthy end-user install.

Move it to xt/author/example.t so it runs under author/release testing
(and in CI) but never during a normal make test. Relocate the
Test::RequiresInternet prereq from the test phase to develop, since
example.t was its only consumer.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: oalders

Changes

@@ -1,6 +1,9 @@
 Release history for LWP-Protocol-https
 
 {{$NEXT}}
+    - Move the live httpbin.org test from t/example.t to xt/author/example.t so
+      that a transient outage of the external service (e.g. a 503) can no longer
+      fail an end-user install. The test still runs in CI. (Claude Opus 4.8)
 
 6.16      2026-07-23 03:48:07Z
     - Remove undeclared Try::Tiny dependency from t/diag.t, which could cause

cpanfile

@@ -24,12 +24,12 @@ on 'test' => sub {
     requires "Socket" => "0";
     requires "Test::More" => "0.96";
     requires "Test::Needs" => "0.002010";
-    requires "Test::RequiresInternet" => "0";
     requires "warnings" => "0";
 };
 
 on 'develop' => sub {
     requires 'Capture::Tiny' => '0.48';
+    requires "Test::RequiresInternet" => "0";
     requires 'Test::CheckManifest' => '1.29';
     requires 'Test::CleanNamespaces';
     requires "Test::CPAN::Changes" => "0.19";