[BUG] Searching on a REGEX character will break die highlighting filter

[kees-hoogerheide-teampeak]

Describe the bug

When you only enter a + sign in the searchbar, the regex which is used to highlight the search result will error, breaking the javascript on the page.

To Reproduce

Steps to reproduce the behavior:

1. Go to any of the index pages of easy admin
2. Enter a + in the search bar and press on search
3. In the console you will see a error `
4. See error [Uncaught SyntaxError: nothing to repeat](app.18be9a54.js:2 Uncaught SyntaxError: Invalid regular expression: /+/i: Nothing to repeat (at app.18be9a54.js:2:154890))

Expected behavior

What should happen is, the page should reload and highlight all + characters in the found results.

Screenshots/Logs

app.18be9a54.js:2 Uncaught SyntaxError: Invalid regular expression: /+/i: Nothing to repeat (at app.18be9a54.js:2:154890)
    at new RegExp (<anonymous>)
    at t.rt (app.18be9a54.js:2:154890)
    at new t (app.18be9a54.js:2:152255)
    at HTMLDocument.<anonymous> (app.18be9a54.js:2:151550)
rt @ app.18be9a54.js:2
t @ app.18be9a54.js:2
(anonymous) @ app.18be9a54.js:2

Server Infos (please complete the following information):

• OS: Windows 11, Chrome (Version 130.0.6723.70 (Official Build) (64-bit))
• EasyAdmin Version: v4.13.5

Additional context

The error comes from "easycorp\easyadmin-bundle\assets\js\autocomplete.js" line 184.
Inside the method #createSearchHighlight() where the characters aren't being escaped and directly taken from the input field:

#createSearchHighlight() {
    ...
    const searchQueryTerms = tokenizeString(searchElement.value);
    const searchQueryTermsHighlightRegexp = new RegExp(searchQueryTerms.join('|'), 'i');
    ...
}

[Blumlaut]

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