* lisp/startup.el: Fix bug#45857, bug#30994, and bug#45913.

* lisp/startup.el: Fix bug#45857, bug#30994, and bug#45913.

(command-line): Don't re-evaluate the `custom-delayed-init-variables`
a second time after reading the `early-init.el` file.
(x-apply-session-resources): Set `blink-cursor-mode` rather than
`no-blinking-cursor`.

* lisp/frame.el (blink-cursor-start): Turn `blink-cursor-mode` off
if `blink-cursor-mode` was set to nil.
(blink-cursor-mode): Default to it being enabled regardless of
`window-system`.

* lisp/custom.el (custom-initialize-delay): Fox docstring now that
autoload.el preserves the `:initialize` info.