HTMLForm: Pass field data instead of fields to filter

I believe there is a mistake, since DefaultPreferencesFactory::cleanSignature() uses it as field data, which is the only filter applied in the core.

Change-Id: Ic7aa509a3e5fd3a3c717259d83d5bf0a26d3556a

includes/htmlform/HTMLForm.php

@@ -2036,7 +2036,7 @@ class HTMLForm extends ContextSource {
 		# Filter data.
 		foreach ( $fieldData as $name => &$value ) {
 			$field = $this->mFlatFields[$name];
-			$value = $field->filter( $value, $this->mFlatFields );
+			$value = $field->filter( $value, $fieldData );
 		}
 
 		$this->mFieldData = $fieldData;

includes/htmlform/HTMLFormField.php

@@ -353,7 +353,7 @@ abstract class HTMLFormField {
 	 * @stable to override
 	 *
 	 * @param mixed $value
-	 * @param HTMLFormField[] $alldata
+	 * @param mixed[] $alldata
 	 *
 	 * @return mixed
 	 */