Create podcast show in onboarding gives "Invalid taxonomy" error.

[iamdharmesh]

Describe the bug

Creating a podcast show in the onboarding first step gives an "Invalid taxonomy" error.

PHP Warning:  Use of undefined constant TAXONOMY_NAME - assumed 'TAXONOMY_NAME' (this will throw an Error in a future version of PHP) in /Users/******/public/wp-content/plugins/simple-podcasting/includes/create-podcast.php on line 128

It seems this issue is related to recent PR #238 in which we renamed Constant TAXONOMY_NAME to PODCASTING_TAXONOMY_NAME and need to update the constant to PODCASTING_TAXONOMY_NAME here.

simple-podcasting/includes/create-podcast.php

Lines 126 to 129 in f677004

	$result = wp_insert_term(
	$this->podcast_name,
	TAXONOMY_NAME
	);

Steps to Reproduce

1. Activate the plugin for the first time on site or update the simple_podcasting_onboarding option to no, if it is already in use on site.
2. Feel a podcast show details on onboarding and click on create.
3. Notice that create podcast failed and the "Invalid taxonomy" error is shown.

Screenshots, screen recording, code snippet

Environment information

No response

WordPress information

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

[kmgalanakis]

PR here: #247