Everywhere: Fix badly-formatted includes

In 7c5e30daaa, the focus was "only" on
Userland/Libraries/, whereas this commit cleans up the remaining
headers in the repo, and any new badly-formatted include.

Tests/AK/TestVector.cpp

@@ -4,12 +4,12 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include "AK/ReverseIterator.h"
 #include <LibTest/TestCase.h>
 
 #include <AK/DeprecatedString.h>
 #include <AK/NonnullOwnPtrVector.h>
 #include <AK/OwnPtr.h>
+#include <AK/ReverseIterator.h>
 #include <AK/Vector.h>
 
 TEST_CASE(construct)

Tests/LibCore/TestLibCoreSharedSingleProducerCircularQueue.cpp

@@ -4,10 +4,10 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include "sched.h"
 #include <LibCore/SharedCircularQueue.h>
 #include <LibTest/TestCase.h>
 #include <LibThreading/Thread.h>
+#include <sched.h>
 
 using TestQueue = Core::SharedSingleProducerCircularQueue<int>;
 using QueueError = ErrorOr<int, TestQueue::QueueStatus>;

Tests/LibRegex/Regex.cpp

@@ -4,13 +4,13 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include "LibRegex/RegexMatcher.h"
 #include <LibTest/TestCase.h> // import first, to prevent warning of VERIFY* redefinition
 
 #include <AK/StringBuilder.h>
 #include <AK/Tuple.h>
 #include <LibRegex/Regex.h>
 #include <LibRegex/RegexDebug.h>
+#include <LibRegex/RegexMatcher.h>
 #include <stdio.h>
 
 static ECMAScriptOptions match_test_api_options(const ECMAScriptOptions options)