docs: add warning about current cache behaviour

docs/content/2.guide/8.lazy-load-translations.md

@@ -78,10 +78,7 @@ About `defineI18nLocale` details, see the [here](/api/composables#defineI18nLoca
 ::
 
 ::alert{type="warn"}
-
-The js / ts format is currently an experimental feature and is disabled by default. 
-
-If you want to use it, you must set the `experimental.jsTsFormatResource` module option to `true`.
+Support for JS/TS format resources is an experimental feature and is disabled by default, to enable this set the `experimental.jsTsFormatResource` module option to `true`.
 ::
 
 ::alert{type="info"}
@@ -176,5 +173,11 @@ In the example above, only two files are defined for `files`, of course you can
 By taking advantage of the characteristic that locale messages are overridden in sequence, it's possible to manage locale messages by defining them on a differential basis. By adding shared (common) locale messages as the first entry of `files`, followed by file entries of regional/dialectal locale messages, it's possible to manage resources while avoiding the duplication of locale messages.
 
 ::alert{type="info"}
-Lazy loaded locale messages are cached by filename, when the same filename is used in the `files` array of other `locales`, once loaded, it will be used from cache.
+Lazy loaded locale messages are cached based on their filename, `file` and `files` shared across locales will be used from cache once loaded.
+::
+
+::alert{type="warn"}
+Please note that caching for JS/TS format resources is disabled by default as these files can return messages dynamically.
+
+Support for enabling/disabling caching on a per file basis is currently in development.
 ::