[api] Expand comments on consuming cached data when compile script

Bug: v8:11607
Change-Id: If997ed1ec6a250b197ed994a6d0e6013fbec4b2b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2796911Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73744}

include/v8.h

@@ -2007,7 +2007,8 @@ class V8_EXPORT ScriptCompiler {
    *
    * Note that when producing cached data, the source must point to NULL for
    * cached data. When consuming cached data, the cached data must have been
-   * produced by the same version of V8.
+   * produced by the same version of V8, and the embedder needs to ensure the
+   * cached data is the correct one for the given script.
    *
    * \param source Script source code.
    * \return Compiled script object (context independent; for running it must be