New log in pages do not work well with autofill

### Description

In my testing, the new log in and screens never offer to add new credentials to the system password manager. The system password manager does offer to fill in previously saved items for me though (using Google as my password manager).

### Step-by-step reproduction instructions

1. Check your system settings and make sure that "Offer to save passwords" and "Auto sign-in" (or the equivalents on your device) are enabled.
2. Go to log in with the new onboarding flow
3. Observe that if you have credentials saved for the app, the system does not always offer to autofill them
4. Observe that after entering credentials, the system does not offer to save them

### Screenshots or screen recording

_No response_

### Did you search for existing bug reports?

- [X] I have searched for existing bug reports.

### Device, Operating system, and Pocket Casts app version

Samsung A13 running Android 12, Pocket Casts 7.30-rc-1