[BUGFIX] Check if languageField isset #99

Job	Run time
Code quality checks (composer:normalize, 8.1)	29s
Code quality checks (composer:normalize, 8.2)	21s
PHP linter (8.1)	6s
TypoScript linter	12s
Xliff linter	11s
PHP linter (8.2)	9s
Code quality checks (json:lint, 8.1)	20s
Code quality checks (json:lint, 8.2)	24s
YAML linter	11s
Code quality checks (php:cs-fixer, 8.1)	21s
Code quality checks (php:cs-fixer, 8.2)	21s
Code quality checks (php:sniff, 8.1)	22s
Code quality checks (php:sniff, 8.2)	34s
Unit tests (highest, 8.1, ^12.4)	31s
Unit tests (highest, 8.2, ^12.4)	36s
Copy'n'paste detector	9s
Unit tests (lowest, 8.1, ^12.4)	45s
Unit tests (lowest, 8.2, ^12.4)	49s
	6m 51s

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