[cli] Don't perform CLI secret initialisation unless needed

[tigattack]

Description

Calling GetOrCreateClISecret() can cause issues in some unattended scenarios.

I'm creating a Brew formula for ente CLI with the following test:

  test do
    assert_match "Version #{version}", shell_output("#{bin}/ente version")
  end

When running brew test for the formula, ente would fail with the following error: 2024/11/13 11:49:56 error setting password in keyring: exit status 154

And I would see this pop-up:

[CLAassistant]

All committers have signed the CLA.

[S33G]

nice

[mathieutu]

@tigattack Hey, sorry I'm just seeing your message.
I already made the PR to Homebrew. 😬
Linux test does not pass, feel free to update it if you understand why. 🙂

@ua741 Could we release this change? We won't probably be able to see the formula merged until the error is fixed.

Thanks!