Site added instantly to the ledger

[NejcZdovc]

Test plan

1. Open about:preferences#payments
2. Enable Payments
3. Visit a site
4. Switch the tab to payments immediately (within 8 seconds)
5. Make sure that site is not listed there

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• Did you search for similar issues before submitting this one?
  yes

• Describe the issue you encountered:
  Site is added instantly to the ledger, minimum visit time is not used.

• Platform (Win7, 8, 10? macOS? Linux distro?):
  macOS

• Brave Version (revision SHA):
  b0d7fc0

• Steps to reproduce:

  1. go to payments and enable it
  2. visit a site and switch to payments immediately

• Actual result:
  

• Expected result:
  site should be added only after 8s on that site

• Will the steps above reproduce in a fresh profile? If not what other info can be added?
  yes

• Is this an issue in the currently released version?

• Can this issue be consistently reproduced?
  yes

• Extra QA steps:
  1.
  2.
  3.

• Screenshot if needed:

• Any related issues:

[srirambv]

I think this is same as #10036