Interactivity API: fix `data-wp-bind` skipping valid directives after encountering an invalid one

Change `return` to `continue` in `data_wp_bind_processor` so that when an element has multiple `data-wp-bind` directives and one is invalid (empty suffix or unique ID), the invalid entry is skipped instead of causing the entire function to exit, allowing valid directives on the same element to still be processed.

Props DAreRodz, ozgursar, alexodiy.
Fixes #64518.

git-svn-id: https://develop.svn.wordpress.org/trunk@62070 602fd350-edb4-49c9-b593-d223f7449a82