fix: [BC] fix wrong types for Requests

Fixes the following errors:
 ------ ------------------------------------------------------------------
  Line   system/CodeIgniter.php
 ------ ------------------------------------------------------------------
  529    Parameter #1 $request of method
         CodeIgniter\Cache\PageCache::cachePage() expects
         CodeIgniter\HTTP\CLIRequest|CodeIgniter\HTTP\IncomingRequest,
         CodeIgniter\HTTP\Request|null given.
  685    Parameter #1 $request of method
         CodeIgniter\Cache\PageCache::getCachedResponse() expects
         CodeIgniter\HTTP\CLIRequest|CodeIgniter\HTTP\IncomingRequest,
         CodeIgniter\HTTP\Request|null given.
 ------ ------------------------------------------------------------------

phpstan-baseline.neon.dist

@@ -25,16 +25,6 @@ parameters:
 			count: 1
 			path: system/Cache/Handlers/RedisHandler.php
 
-		-
-			message: "#^Call to an undefined method CodeIgniter\\\\HTTP\\\\Request\\:\\:getPost\\(\\)\\.$#"
-			count: 1
-			path: system/CodeIgniter.php
-
-		-
-			message: "#^Call to an undefined method CodeIgniter\\\\HTTP\\\\Request\\:\\:setLocale\\(\\)\\.$#"
-			count: 1
-			path: system/CodeIgniter.php
-
 		-
 			message: "#^Property CodeIgniter\\\\Database\\\\BaseBuilder\\:\\:\\$db \\(CodeIgniter\\\\Database\\\\BaseConnection\\) in empty\\(\\) is not falsy\\.$#"
 			count: 1

system/CodeIgniter.php

@@ -85,7 +85,7 @@ class CodeIgniter
     /**
      * Current request.
      *
-     * @var CLIRequest|IncomingRequest|Request|null
+     * @var CLIRequest|IncomingRequest|null
      */
     protected $request;
 
@@ -471,7 +471,7 @@ protected function handleRequest(?RouteCollectionInterface $routes, Cache $cache
                 return $possibleResponse;
             }
 
-            if ($possibleResponse instanceof Request) {
+            if ($possibleResponse instanceof IncomingRequest || $possibleResponse instanceof CLIRequest) {
                 $this->request = $possibleResponse;
             }
         }
@@ -611,9 +611,11 @@ protected function startBenchmark()
      * Sets a Request object to be used for this request.
      * Used when running certain tests.
      *
+     * @param CLIRequest|IncomingRequest $request
+     *
      * @return $this
      */
-    public function setRequest(Request $request)
+    public function setRequest($request)
     {
         $this->request = $request;
 

system/Test/FeatureTestCase.php

@@ -12,6 +12,7 @@
 namespace CodeIgniter\Test;
 
 use CodeIgniter\Events\Events;
+use CodeIgniter\HTTP\CLIRequest;
 use CodeIgniter\HTTP\Exceptions\RedirectException;
 use CodeIgniter\HTTP\IncomingRequest;
 use CodeIgniter\HTTP\Request;
@@ -328,11 +329,13 @@ protected function setupHeaders(IncomingRequest $request)
      *
      * Always populate the GET vars based on the URI.
      *
-     * @return Request
+     * @param CLIRequest|IncomingRequest $request
+     *
+     * @return CLIRequest|IncomingRequest
      *
      * @throws ReflectionException
      */
-    protected function populateGlobals(string $method, Request $request, ?array $params = null)
+    protected function populateGlobals(string $method, $request, ?array $params = null)
     {
         // $params should set the query vars if present,
         // otherwise set it from the URL.
@@ -357,10 +360,13 @@ protected function populateGlobals(string $method, Request $request, ?array $par
      * This allows the body to be formatted in a way that the controller is going to
      * expect as in the case of testing a JSON or XML API.
      *
-     * @param array|null $params The parameters to be formatted and put in the body. If this is empty, it will get the
-     *                           what has been loaded into the request global of the request class.
+     * @param CLIRequest|IncomingRequest $request
+     * @param array|null                 $params  The parameters to be formatted and put in the body. If this is empty, it will get the
+     *                                            what has been loaded into the request global of the request class.
+     *
+     * @return CLIRequest|IncomingRequest
      */
-    protected function setRequestBody(Request $request, ?array $params = null): Request
+    protected function setRequestBody($request, ?array $params = null)
     {
         if (isset($this->requestBody) && $this->requestBody !== '') {
             $request->setBody($this->requestBody);