FIX Update ORM DBField types to use Injector in scaffoldFormField()

- This is usable in cases where a DBField is needed to be overloaded through the Injector.

src/ORM/FieldType/DBBoolean.php

@@ -56,7 +56,7 @@ class DBBoolean extends DBField
 
     public function scaffoldFormField($title = null, $params = null)
     {
-        return new CheckboxField($this->name, $title);
+        return CheckboxField::create($this->name, $title);
     }
 
     public function scaffoldSearchField($title = null)

src/ORM/FieldType/DBHTMLText.php

@@ -203,7 +203,7 @@ class DBHTMLText extends DBText
 
     public function scaffoldFormField($title = null, $params = null)
     {
-        return new HTMLEditorField($this->name, $title);
+        return HTMLEditorField::create($this->name, $title);
     }
 
     public function scaffoldSearchField($title = null)

src/ORM/FieldType/DBInt.php

@@ -58,7 +58,7 @@ class DBInt extends DBField
 
     public function scaffoldFormField($title = null, $params = null)
     {
-        return new NumericField($this->name, $title);
+        return NumericField::create($this->name, $title);
     }
 
     public function nullValue()

src/ORM/FieldType/DBText.php

@@ -246,10 +246,10 @@ class DBText extends DBString
     {
         if (!$this->nullifyEmpty) {
             // Allow the user to select if it's null instead of automatically assuming empty string is
-            return new NullableField(new TextareaField($this->name, $title));
+            return NullableField::create(TextareaField::create($this->name, $title));
         } else {
             // Automatically determine null (empty string)
-            return new TextareaField($this->name, $title);
+            return TextareaField::create($this->name, $title);
         }
     }
 

src/ORM/FieldType/DBYear.php

@@ -20,7 +20,7 @@ class DBYear extends DBField
 
     public function scaffoldFormField($title = null, $params = null)
     {
-        $selectBox = new DropdownField($this->name, $title);
+        $selectBox = DropdownField::create($this->name, $title);
         $selectBox->setSource($this->getDefaultOptions());
         return $selectBox;
     }