fix(http): Enhance setPsr7Request: parse body

Introduce a proper bridge between PSR-7 ServerRequestInterface and Yii Request, including request body parsing.

The setPsr7Request method now:
- extracts the raw Content-Type header (trimming parameters like `charset=UTF-8`);
- resolves an appropriate request parser from `$this->parsers` (or the `'*'` fallback, if configured);
- parses the PSR-7 request body and injects the result into `parsedBody` via `$request->withParsedBody()`;
- wraps the request in `ServerRequestAdapter` while adding the `statelessAppStartTime` header for tracing/debugging;
- updates the PSR-7 adapter for `UploadedFile` via `UploadedFile::setPsr7Adapter()`.

This change:
- aligns PSR-7-based requests with the existing Yii Request behavior regarding body parsing and UploadedFile handling;
- enables stateless application startup time tracing at the PSR-7 request level;
- keeps compatibility with existing Yii request parsers configured in the application.

Author: Blezigen

src/http/Request.php

@@ -768,7 +768,7 @@ public function resolve(): array
         return parent::resolve();
     }
 
-    /**
+       /**
      * Sets and bridges a PSR-7 ServerRequestInterface instance for the current request.
      *
      * Wraps the provided PSR-7 {@see ServerRequestInterface} in a {@see ServerRequestAdapter} to enable full PSR-7
@@ -789,10 +789,35 @@ public function resolve(): array
      */
     public function setPsr7Request(ServerRequestInterface $request): void
     {
+        $rawContentType = $this->getContentType();
+        if (($pos = strpos((string)$rawContentType, ';')) !== false) {
+            // e.g. text/html; charset=UTF-8
+            $contentType = substr($rawContentType, 0, $pos);
+        } else {
+            $contentType = $rawContentType;
+        }
+
+        if (isset($this->parsers[$contentType])) {
+            $parser = Yii::createObject($this->parsers[$contentType]);
+            if (!($parser instanceof RequestParserInterface)) {
+                throw new InvalidConfigException("The '$contentType' request parser is invalid. It must implement the yii\\web\\RequestParserInterface.");
+            }
+            $parsedParams = $parser->parse((string)$request->getBody(), $rawContentType);
+        } elseif (isset($this->parsers['*'])) {
+            $parser = Yii::createObject($this->parsers['*']);
+            if (!($parser instanceof RequestParserInterface)) {
+                throw new InvalidConfigException('The fallback request parser is invalid. It must implement the yii\\web\\RequestParserInterface.');
+            }
+            $parsedParams = $parser->parse((string)$request->getBody(), $rawContentType);
+        }
+
+        if ($parsedParams !== null) {
+            $request = $request->withParsedBody((array)$parsedParams);
+        }
+
         $this->adapter = new ServerRequestAdapter(
-            $request->withHeader('statelessAppStartTime', (string) microtime(true)),
+            $request->withHeader('statelessAppStartTime', (string) microtime(true))
         );
-
         UploadedFile::setPsr7Adapter($this->adapter);
     }