Merge branch '4.2'

* 4.2:
  Catch empty deprecation.log silently (fixes #31050)
  minor: the meaning of the data breach was not correct
  Optimize SVGs
  property normalizer should also pass format and context to isAllowedAttribute

Dumper/HtmlDumper.php

@@ -526,14 +526,10 @@ function showCurrent(state)
             <input type="text" class="sf-dump-search-input">
             <span class="sf-dump-search-count">0 of 0<\/span>
             <button type="button" class="sf-dump-search-input-previous" tabindex="-1">
-                <svg viewBox="0 0 1792 1792" xmlns="http://www.w3.org/2000/svg">
-                    <path d="M1683 1331l-166 165q-19 19-45 19t-45-19l-531-531-531 531q-19 19-45 19t-45-19l-166-165q-19-19-19-45.5t19-45.5l742-741q19-19 45-19t45 19l742 741q19 19 19 45.5t-19 45.5z"\/>
-                <\/svg>
+                <svg viewBox="0 0 1792 1792" xmlns="http://www.w3.org/2000/svg"><path d="M1683 1331l-166 165q-19 19-45 19t-45-19L896 965l-531 531q-19 19-45 19t-45-19l-166-165q-19-19-19-45.5t19-45.5l742-741q19-19 45-19t45 19l742 741q19 19 19 45.5t-19 45.5z"\/><\/svg>
             <\/button>
             <button type="button" class="sf-dump-search-input-next" tabindex="-1">
-                <svg viewBox="0 0 1792 1792" xmlns="http://www.w3.org/2000/svg">
-                    <path d="M1683 808l-742 741q-19 19-45 19t-45-19l-742-741q-19-19-19-45.5t19-45.5l166-165q19-19 45-19t45 19l531 531 531-531q19-19 45-19t45 19l166 165q19 19 19 45.5t-19 45.5z"\/>
-                <\/svg>
+                <svg viewBox="0 0 1792 1792" xmlns="http://www.w3.org/2000/svg"><path d="M1683 808l-742 741q-19 19-45 19t-45-19L109 808q-19-19-19-45.5t19-45.5l166-165q19-19 45-19t45 19l531 531 531-531q19-19 45-19t45 19l166 165q19 19 19 45.5t-19 45.5z"\/><\/svg>
             <\/button>
         ';
         root.insertBefore(search, root.firstChild);