Ignored empty search tokens

[sergiucoman]

Please always provide the GitHub issue(s) your PR is for, as well as test URLs where your change can be observed (before and after):

Fix #

Test URLs:

• Before: https://main--servicenow--hlxsites.hlx.live/
• After: https://search--servicenow--hlxsites.hlx.live/

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Commits

* [39ecefc](https://github.com/hlxsites/servicenow/commit/39ecefcd1dba6f8abbc58245bd0dd29fc19c17d6) :white_check_mark: (latest) * [ffeb987](https://github.com/hlxsites/servicenow/commit/ffeb98785f216ffef379943490bdd871a86a882c) :white_check_mark: * [6f183ab](https://github.com/hlxsites/servicenow/commit/6f183abb2061be525e9a20cbb2e41a90cfcb7238) :white_check_mark:

[aem-code-sync[bot]]

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[andreituicu]

LGTM! should we check for the case where there are only whitespaces and return early?