Merge branch '3.4' into 4.0

* 3.4:
  Fix tests
  PropertyInfo\DoctrineExtractor - There is bug when indexBy is meta key
  Fix PercentType error rendering.
  [minor] SCA
  [Cache] Inline some hot function calls

Author: nicolas-grekas

Resources/views/Form/bootstrap_4_layout.html.twig

@@ -106,8 +106,7 @@
 {%- endblock dateinterval_widget %}
 
 {% block percent_widget -%}
-    <div class="input-group{{ not valid ? ' form-control is-invalid' }}">
-        {% set valid = true %}
+    <div class="input-group">
         {{- block('form_widget_simple') -}}
         <div class="input-group-append">
             <span class="input-group-text">%</span>