Account for inline images in formatContent() #640

Job	Run time
PHPUnit coverage (PHP 7.4)	1m 0s
Tests alternative autoloader (PHP 7.1)	7s
PHPUnit Composer v2 (PHP 7.4)	33s
PHPUnit (PHP 7.1)	33s
PHPUnit (PHP 7.2)	34s
PHPUnit (PHP 7.3)	43s
PHPUnit lowest deps (PHP 7.3)	29s
PHPUnit (PHP 7.4)	31s
PHPUnit (PHP 8.0)	36s
Windows-Tests with PHP 7.1	1m 32s
PHPUnit (PHP 8.1)	50s
Windows-Tests with PHP 7.2	59s
PHPUnit (PHP 8.2)	36s
Windows-Tests with PHP 7.3	1m 3s
PHPUnit (PHP 8.3)	31s
Windows-Tests with PHP 7.4	54s
Tests alternative autoloader (PHP 7.2)	11s
Windows-Tests with PHP 8.0	1m 0s
Windows-Tests with PHP 8.1	59s
Tests alternative autoloader (PHP 7.3)	10s
Tests alternative autoloader (PHP 7.4)	11s
Windows-Tests with PHP 8.2	1m 12s
Tests alternative autoloader (PHP 8.0)	16s
Windows-Tests with PHP 8.3	1m 8s
Tests alternative autoloader (PHP 8.1)	8s
Tests alternative autoloader (PHP 8.2)	17s
Tests alternative autoloader (PHP 8.3)	9s
	17m 12s

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