fix: "key" argument for MetaData fields fixed #1243

Job	Run time
Running Automated Tests w/ WPBrowser in WordPress v6.7 on PHP8.3 with Codecoverage	8m 11s
Running Automated Tests w/ WPBrowser in WordPress v6.3 on PHP8.3 with HPOS activated	4m 54s
Running Automated Tests w/ WPBrowser in WordPress v6.1 on PHP8.3	4m 42s
Running Automated Tests w/ WPBrowser in WordPress v6.7 on PHP8.2	4m 44s
Running Automated Tests w/ WPBrowser in WordPress v6.3 on PHP8.2 with HPOS activated	4m 43s
Running Automated Tests w/ WPBrowser in WordPress v6.1 on PHP8.2	5m 24s
Running Automated Tests w/ WPBrowser in WordPress v6.7 on PHP8.1	5m 8s
Running Automated Tests w/ WPBrowser in WordPress v6.3 on PHP8.1 with HPOS activated	4m 41s
Running Automated Tests w/ WPBrowser in WordPress v6.1 on PHP8.1 in Debug Mode	4m 59s
Running Automated Tests w/ WPBrowser in WordPress v6.7 on PHP7.4	3m 6s
Running Automated Tests w/ WPBrowser in WordPress v6.3 on PHP7.4 with HPOS activated	2m 54s
Running Automated Tests w/ WPBrowser in WordPress v6.1 on PHP7.4	3m 6s
	56m 32s

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