fix(apps.sign.up): fix firefox css issue (#1053)

Author: Jisay

packages/manager/apps/sign-up/package.json

@@ -14,6 +14,7 @@
   },
   "dependencies": {
     "@ovh-ux/manager-core": "^6.1.0",
+    "@ovh-ux/manager-config": "^0.3.0",
     "@ovh-ux/ng-ovh-sso-auth": "^4.1.0",
     "@ovh-ux/ng-translate-async-loader": "^2.0.0",
     "@ovh-ux/sign-up": "^1.0.0",

packages/manager/apps/sign-up/src/assets/theme/_input.less

@@ -59,6 +59,10 @@
 
 // Selects
 
+select.oui-select__input {
+  -moz-appearance: none;
+}
+
 .oui-select {
   .oui-icon {
     box-shadow: none !important;