fix(admin): prevent browser password manager from autofilling account API key

Chrome's password manager matched the apikey-type account's Base URL + API Key
inputs as a login form and autofilled the last saved password by domain, so
editing a Gemini account could overwrite its apikey with a Claude key that
shared the same Base URL. Add autocomplete="new-password" plus data-*-ignore
attributes for 1Password / LastPass / Bitwarden to opt the field out of every
major password manager's autofill.

frontend/src/components/account/EditAccountModal.vue

@@ -52,6 +52,10 @@
             v-model="editApiKey"
             type="password"
             class="input font-mono"
+            autocomplete="new-password"
+            data-1p-ignore
+            data-lpignore="true"
+            data-bwignore="true"
             :placeholder="
               account.platform === 'openai'
                 ? 'sk-proj-...'