Gate follow-up for #7056. Two defects in the conditional password form:
1. The {{LOGIN_INVALID_PW}} / {{LOGIN_CONN_FAILED}} .replace() calls were
deleted with the moved block, but those placeholders live on the <form>
tag which ALWAYS renders. login.js reads data-invalid-pw back, and the
literal is non-empty so its || fallback never fired: a wrong password
displayed the raw text {{LOGIN_INVALID_PW}} in all 14 locales, even with
password auth ENABLED. Proven by a clean-master control (test_login_locale
3/3 on master, 2/3 on the PR).
2. is_password_auth_enabled() also gated the PASSKEY button, but passkeys are
an independent auth method (auth.py is_auth_enabled, and settings expose
passwordless_enabled = passkeys AND not password). A passwordless-passkey
instance lost its only login control. login.js additionally bailed at
'if (!form || !input) return' before ever wiring the passkey handler.
nesquena-hermes
e6592f41af
