Enhancement: Add config option to handle default block refs expanding behaviour

[aiirobyte]

fix #7802

[CLAassistant]

All committers have signed the CLA.

[cnrpman]

Thanks for the great work!

1. To avoid additional breaking change to the current behavior (expanding refs), better to provide default value true upon having no :ui/auto-expand-block-refs? provided in config.edn. Entry point for having default value in codebase:
   

   logseq/src/main/frontend/state.cljs

   Lines 312 to 321 in d6e1889

   	(def default-config
   	"Default config for a repo-specific, user config"
   	{:feature/enable-search-remove-accents? true
   	:default-arweave-gateway "https://arweave.net"
   	;; For flushing the settings of old versions. Don't bump this value.
   	;; There are only two kinds of graph, one is not upgraded (:legacy) and one is upgraded (:triple-lowbar)
   	;; For not upgraded graphs, the config will have no key `:file/name-format`
   	;; Then the default value is applied
   	:file/name-format :legacy})

2. Minor tune to words (optional & non-blocking, suggestion welcome)

[situ2001]

Thank you for your great fix. I will take a look at it. Before that, I recorded a GIF to demonstrate the setting option.

You may embed it into the setting page like this.

[situ2001]

Thanks for your work, I made some small adjustment to this PR which fix UI error and enhance UX.

[cnrpman]

LGTM

[situ2001]

LGTM