test(android): Restore the executor before teardown

The rejecting executor is shared through the options, and teardown
closes the provider through it, so leaving it rejecting skipped
clearing the static connectivity manager for later tests.

Author: alwx

sentry-android-core/src/test/java/io/sentry/android/core/internal/util/AndroidConnectionStatusProviderTest.kt

@@ -290,6 +290,9 @@ class AndroidConnectionStatusProviderTest {
 
     captor.firstValue.execute {}
 
+    // Cleanup runs through the same executor, and connectivityManager is static, so a still
+    // rejecting executor would leak a stale manager into later tests.
+    executor.reject = false
     provider.close()
   }