fix: Bug in Session_Transaction_Manager::pop_transaction_id() fixed #1089

Job	Run time
Running Automated Tests w/ WPBrowser in WordPress v6.3 on PHP8.1	3m 29s
Running Automated Tests w/ WPBrowser in WordPress v6.2 on PHP8.1 with HPOS activated	3m 34s
Running Automated Tests w/ WPBrowser in WordPress v6.1 on PHP8.1 in Debug Mode	3m 38s
Running Automated Tests w/ WPBrowser in WordPress v6.0 on PHP8.1	3m 46s
Running Automated Tests w/ WPBrowser in WordPress v6.3 on PHP8.0	3m 32s
Running Automated Tests w/ WPBrowser in WordPress v6.2 on PHP8.0 with HPOS activated	3m 36s
Running Automated Tests w/ WPBrowser in WordPress v6.1 on PHP8.0	3m 32s
Running Automated Tests w/ WPBrowser in WordPress v6.0 on PHP8.0	3m 29s
Running Automated Tests w/ WPBrowser in WordPress v6.3 on PHP7.4	1m 58s
Running Automated Tests w/ WPBrowser in WordPress v6.2 on PHP7.4 with HPOS activated with Codecoverage	2m 6s
Running Automated Tests w/ WPBrowser in WordPress v6.1 on PHP7.4	2m 5s
Running Automated Tests w/ WPBrowser in WordPress v6.0 on PHP7.4	2m 3s
	36m 48s

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