[5.x] Reduce the number of times the fieldsCache is reset

src/Fields/Blueprint.php

@@ -42,6 +42,8 @@ class Blueprint implements Arrayable, ArrayAccess, Augmentable, QueryableValue
     protected $ensuredFields = [];
     protected $afterSaveCallbacks = [];
     protected $withEvents = true;
+    private $lastBlueprintHandle = null;
+
     private ?Columns $columns = null;
 
     public function setHandle(string $handle)
@@ -635,6 +637,16 @@ public function validateUniqueHandles()
 
     protected function resetFieldsCache()
     {
+        if ($this->parent) {
+            $blueprintHandle = (fn () => property_exists($this, 'blueprint') ? $this->blueprint : null)->call($this->parent);
+
+            if ($blueprintHandle && $blueprintHandle === $this->lastBlueprintHandle) {
+                return $this;
+            }
+
+            $this->lastBlueprintHandle = $blueprintHandle;
+        }
+
         $this->fieldsCache = null;
 
         Blink::forget($this->contentsBlinkKey());