fix: correct PHPStan errors in ErrorListenerIntegration and Options

- ErrorListenerIntegration: revert closure return type to bool (required by
  set_error_handler contract) and cast previous handler result with (bool)
  to safely handle null returns from chained handlers
- Options: fix beforeSend PHPDoc second param from array<string,mixed>
  to EventHint|null to match actual call site in Client::prepareEvent

Author: Polliog

packages/logtide/src/Integration/ErrorListenerIntegration.php

@@ -29,7 +29,7 @@ public function setupOnce(): void
             string $message,
             string $file,
             int $line,
-        ): ?bool {
+        ): bool {
             if (!(error_reporting() & $severity)) {
                 return false;
             }
@@ -43,7 +43,7 @@ public function setupOnce(): void
             $hub->captureEvent($event);
 
             if ($this->previousHandler !== null) {
-                return ($this->previousHandler)($severity, $message, $file, $line);
+                return (bool) ($this->previousHandler)($severity, $message, $file, $line);
             }
 
             return false;

packages/logtide/src/Options.php

@@ -37,7 +37,7 @@ final class Options
 
     private ?TransportInterface $transport = null;
 
-    /** @var (\Closure(Event, array<string, mixed>): ?Event)|null */
+    /** @var (\Closure(Event, EventHint|null): ?Event)|null */
     private ?\Closure $beforeSend = null;
 
     /** @var (\Closure(Breadcrumb\Breadcrumb): ?Breadcrumb\Breadcrumb)|null */
@@ -263,7 +263,7 @@ public function getTransport(): ?TransportInterface
         return $this->transport;
     }
 
-    /** @return (\Closure(Event, array<string, mixed>): ?Event)|null */
+    /** @return (\Closure(Event, EventHint|null): ?Event)|null */
     public function getBeforeSend(): ?\Closure
     {
         return $this->beforeSend;