[BUGFIX] init NewContentElementController with id and language uid

[anjeylink]

@mabolek this should fix issue #376

[mabolek]

I think this PR is trying to fix a bug in the TYPO3 core. I have opened an issue in Forge and will return to this once I have more information from the core devs.
https://forge.typo3.org/issues/90067

I would like to avoid using an XCLASS to fix this.

[anjeylink]

@mabolek I agree that XCLASS is not a good solution.

Anyway I don't think it's a bug of TYPO3, since "NewContentElementController" was designed to work in BE with "id" parameter and extension is using it on FE where new routing for URLs is used.

[mabolek]

@anjeylink Editing should work in the frontend as well as the backend, and loading the wrong PageTS could have implications elsewhere too. Let's anyway wait for the response to the Forge ticket.

[mabolek]

@anjeylink Here's a way to solve the issue without an XCLASS:

$myRequest = $GLOBALS['TYPO3_REQUEST']->withQueryParams(['id' => $tsfe->id]);
$controller = GeneralUtility::makeInstance(NewContentElementController::class);
$controller->init($myRequest);
$controller->wizardArray();

(Thanks to @bmack for the code example.)

[anjeylink]

@mabolek I'll open another PR