Stop requests when not needed

[Senyoret1]

Did you run make format && make check?
The go code was not changed. npm run lint and npm run build were used.

Changes:

• When auth is active, you use the logout button and then the UI returns to the login page, the UI stops making the normal periodical request to the server, to avoid adding unneeded entries to the back-end log, as requested by @0pcom

How to test this PR:
Rebuild the UI. Use the Hypervisor UI with auth active and then press the logout button. When returning to the loging page, no more periodical request to the visors-summary endpoint should be made.