Change gaia URL to be no-thanks.invalid

[bbondy]

Steps to reproduce:

1. Start the browser and log into google.
2. Open settings.
3. Close the browser
4. Open the browser with command line params: --log-net-log=/some/file.json --net-log-capture-mode=IncludeSocketBytes
5. Open up the json file path you mentioned.

Before this fix you should see:

 https://accounts.google.com/ListAccounts?gpsia=1&source=durations_metrics,counter:0,load_time_ms:154&json=standard

After this fix, you should see:

 https://no-thanks.invalid/ListAccounts?gpsia=1&source=durations_metrics,counter:0,load_time_ms:154&json=standard

Note: .invalid is a reserved TLD and is always explicitly invalid.

Test plan:

1. Do the above
2. Make sure google services still work.

Fix brave/brave-browser#1312
See also brave/brave-browser#527

Submitter Checklist:

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).
• Tagged reviewers and labelled the pull request as needed.
• Request a security/privacy review as needed.
• Add appropriate QA labels (QA/Needed or QA/No-QA-Needed) to include the closed issue in milestone

Test Plan:

Reviewer Checklist:

• New files have MPL-2.0 license header.
• Request a security/privacy review as needed.
• Adequate test coverage exists to prevent regressions
• Verify test plan is specified in PR before merging to source

[petemill]

Works as expected. Log shows no-thanks.invalid entries, unless visiting other tabs. Console shows gaia connect error.

[bbondy]

master: 9b42ea4
0.56.x: da5a3c4
0.55.x: 41b84bf