Fix phpstan issues

phpstan.dist.neon

@@ -2,6 +2,10 @@ parameters:
     level: 6
     paths:
         - src
+    reportUnmatchedIgnoredErrors: false
+    ignoreErrors:
+        - 
+            identifier: unset.possiblyHookedProperty
     exceptions:
         check:
             missingCheckedExceptionInThrows: true

src/Geometry/Bezier.php

@@ -199,7 +199,7 @@ class Bezier implements IteratorAggregate, Countable, ArrayAccess, DrawableInter
      */
     public function offsetUnset($offset): void
     {
-        unset($this->points[$offset]); // @phpstan-ignore unset.possiblyHookedProperty
+        unset($this->points[$offset]);
     }
 
     /**

src/Geometry/Polygon.php

@@ -171,7 +171,7 @@ class Polygon implements IteratorAggregate, Countable, ArrayAccess, DrawableInte
      */
     public function offsetUnset($offset): void
     {
-        unset($this->points[$offset]); // @phpstan-ignore unset.possiblyHookedProperty
+        unset($this->points[$offset]);
     }
 
     /**