jQuery .load function errors if loading html with auto-removing script tag

### Description ###
jQuery `.load` function errors if loading html with auto-removing script tag. Callback function is not executed.

While this is kind of a non-issue as jQuery removes scripts with the `.load` function anyways and can be fixed just by removing the `document.currentScript.remove();` from the loaded file, it sort of breaks stuff when I need that file to be loaded elsewhere via different methods and do require the script removal.

### Link to test case ###
Not sure how to demonstrate the `.load` function with the links provided as I need more than 1 file to show the error. So, here's the two html files needed to reproduce the issue.

File: test.html
```html
<!DOCTYPE html>

<html>
    <body>
        <span id="light_dark_msg">
            <script>
                if (window.matchMedia && window.matchMedia("(prefers-color-scheme: light)").matches) {
                    $("#light_dark_msg").html(
                        "<b>P.S.</b> Have you tried viewing this site with your browser in dark mode?"
                    );
                } else {
                    $("#light_dark_msg").html(
                        "<b>P.S.</b> Have you tried viewing this site with your browser in light mode?"
                    );
                }
                document.currentScript.remove(); // This causes jQuery to error if attempting to load this page as the script is already gone by the time the jQuery script remover gets to it.
            </script>
        </span>
    </body>
</html>
```

File: test2.html
```html
<!DOCTYPE html>
<html>
    <head>
        <script src="https://code.jquery.com/jquery-3.7.1.js"></script>
        <script>
            $(document).ready(() => {
                $("#main").load("test.html", function () {
                    // Function errors out. Callback function not executed.
                    this.dispatchEvent(new Event("loading_complete"));
                });
            });
        </script>
    </head>
    <body>
        <div id="main"></div>
    </body>
</html>
```

Error message:
```
Uncaught TypeError: Cannot read properties of null (reading 'removeChild')
    at DOMEval (jquery-3.7.1.js:130:44)
    at domManip (jquery-3.7.1.js:5951:8)
    at jQuery.fn.init.append (jquery-3.7.1.js:6088:10)
    at jQuery.fn.init.<anonymous> (jquery-3.7.1.js:6182:18)
    at access (jquery-3.7.1.js:3905:8)
    at jQuery.fn.init.html (jquery-3.7.1.js:6149:10)
    at Object.<anonymous> (jquery-3.7.1.js:10229:9)
    at fire (jquery-3.7.1.js:3223:31)
    at Object.fireWith [as resolveWith] (jquery-3.7.1.js:3353:7)
    at done (jquery-3.7.1.js:9627:14)
```

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jQuery .load function errors if loading html with auto-removing script tag #5377

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jQuery .load function errors if loading html with auto-removing script tag #5377

Description

Description

Link to test case

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

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