fix: enable basic a11y when voice control is active

[trop]

Backport of #37122

See that PR for details.

Notes: Basic accessibility support is now enabled when macOS Voice Control is activated to allow for full voice control of Electron applications

FTBFS

[codebytere]

../../electron/shell/browser/mac/electron_application.mm:202:67: error: no member named 'flags' in 'ui::AXMode'
  if (!ax_state->GetAccessibilityMode().has_mode(ui::kAXModeBasic.flags())) {
                                                 ~~~~~~~~~~~~~~~~ ^
1 error generated.

[release-clerk]

Release Notes Persisted

Basic accessibility support is now enabled when macOS Voice Control is activated to allow for full voice control of Electron applications