Update the alignment of the chrome://apps theme attribution when theme is installed

chrome/browser/resources/ntp4/new_tab_theme.css

Index: chrome/browser/resources/ntp4/new_tab_theme.css
diff --git a/chrome/browser/resources/ntp4/new_tab_theme.css b/chrome/browser/resources/ntp4/new_tab_theme.css
index 22b339e556cc219d2e91e6ed14a41e38fd8d4677..33a9563834df29701993caf3f164ff9017105150 100644
--- a/chrome/browser/resources/ntp4/new_tab_theme.css
+++ b/chrome/browser/resources/ntp4/new_tab_theme.css
@@ -10,6 +10,12 @@ html {
   background-repeat: ${backgroundTiling};
 }
 
+#attribution {
+  left: ${leftAlignAttribution};
+  right: ${rightAlignAttribution};
+  text-align: ${textAlignAttribution};
+}
+
 #attribution-img {
   content: url(chrome://theme/IDR_THEME_NTP_ATTRIBUTION?${themeId});
 }