Merge branch '7.0' into 7.1

* 7.0:
  [Serializer] Improve exception message in UnwrappingDenormalizer
  [PropertyInfo] Update DoctrineExtractor for new DBAL 4 BIGINT type
  Update security.nl.xlf
  [Validator] IBAN Check digits should always between 2 and 98
  [Security] Populate translations for trans-unit 20
  add missing plural translation messages
  filter out empty HTTP header parts
  [String] Fix folded in compat mode
  Remove calls to `getMockForAbstractClass()`
  [ErrorHandler] Do not call xdebug_get_function_stack() with xdebug >= 3.0 when not in develop mode
  [Serializer] Fix type for missing property
  add test for JSON response with null as content
  [Filesystem] Fix dumpFile `stat failed` error hitting custom handler
  Return false in isTtySupported() when open_basedir restrictions prevent access to /dev/tty.
  Remove calls to `TestCase::iniSet()` and calls to deprecated methods of `MockBuilder`
  [PhpUnitBridge] Fix `DeprecationErrorHandler` with PhpUnit 10

Author: fabpot

Error/FatalError.php

@@ -33,7 +33,7 @@ public function __construct(
                 }
             }
         } elseif (null !== $traceOffset) {
-            if (\function_exists('xdebug_get_function_stack') && $trace = @xdebug_get_function_stack()) {
+            if (\function_exists('xdebug_get_function_stack') && \in_array(\ini_get('xdebug.mode'), ['develop', false], true) && $trace = @xdebug_get_function_stack()) {
                 if (0 < $traceOffset) {
                     array_splice($trace, -$traceOffset);
                 }