Account for inline images in formatContent() #604

Job	Run time
PHPUnit coverage (PHP 7.4)	1m 12s
PHPUnit (PHP 7.1)	36s
PHPUnit (PHP 7.2)	41s
Tests alternative autoloader (PHP 7.1)	33s
PHPUnit Composer v2 (PHP 7.4)	28s
PHPUnit (PHP 7.3)	27s
PHPUnit lowest deps (PHP 7.3)	34s
Tests alternative autoloader (PHP 7.2)	8s
PHPUnit (PHP 7.4)	37s
Tests alternative autoloader (PHP 7.3)	6s
Windows-Tests with PHP 7.1	1m 15s
PHPUnit (PHP 8.0)	28s
Tests alternative autoloader (PHP 7.4)	7s
Windows-Tests with PHP 7.2	59s
PHPUnit (PHP 8.1)	29s
Tests alternative autoloader (PHP 8.0)	6s
Windows-Tests with PHP 7.3	59s
PHPUnit (PHP 8.2)	29s
Windows-Tests with PHP 7.4	54s
PHPUnit (PHP 8.3)	30s
Tests alternative autoloader (PHP 8.1)	7s
Windows-Tests with PHP 8.0	55s
Tests alternative autoloader (PHP 8.2)	7s
Windows-Tests with PHP 8.1	55s
Tests alternative autoloader (PHP 8.3)	6s
Windows-Tests with PHP 8.2	1m 1s
Windows-Tests with PHP 8.3	1m 8s
	15m 57s

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