fix: prevent electron from attempting dbus connections

[cacieprins]

When Electron tries to connect to dbus but cannot, it writes many errors to stdout.

By default, Electron attempts to connect to dbus in order to interact with systray, etc. In docker environments, there is no desktop environment, and thus no dbus. Setting the DBUS_SESSION_BUS_ADDRESS explicitly to disabled: prevents Electron from attempting to connect to dbus.

By preventing Electron from attempting to connect to dbus, the dbus error messages should no longer be emitted in docker environments that source the Cypress docker images unless that environment variable is modified.

There is a companion pull request in the main Cypress project that attempts to disable dbus when Cypress detects that it is not running in an interactive terminal: https://github.com/cypress-io/cypress/pull/32479

[cacieprins]

This isn't a working solution, yet. Investigating.

[MikeMcC399]

• Is this PR now obsolete? PR fix: strip dbus messaging from cli launcher stderr cypress#32547 seems to be addressing the issue inside Cypress.