Add the color for now, so the regex can replace it with white for the dark theme

Actual fix is adjusting the regex on the server, allowing commas in the first regex:
https://github.com/nextcloud/server/pull/13650

Signed-off-by: Joas Schilling <coding@schilljs.com>

img/no-password.svg

@@ -1 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" height="16" width="16" version="1.1" viewBox="0 0 71 100"><path stroke-width=".16" d="m8 0c-2.2091 0-4 1.7909-4 4v3h-1v7h10v-7h-1-2-2-2v-3c0-1.1046 0.8954-2 2-2s2 0.8954 2 2v1h2v-1c0-2.2091-1.791-4-4-4z" transform="matrix(6.25,0,0,6.25,-14.5,0)"/></svg>
+<svg xmlns="http://www.w3.org/2000/svg" height="16" width="16" version="1.1" viewBox="0 0 71 100"><path stroke-width=".16" d="m8 0c-2.2091 0-4 1.7909-4 4v3h-1v7h10v-7h-1-2-2-2v-3c0-1.1046 0.8954-2 2-2s2 0.8954 2 2v1h2v-1c0-2.2091-1.791-4-4-4z" transform="matrix(6.25,0,0,6.25,-14.5,0)" fill="#000"/></svg>