package.json: Add packageManager field for corepack compatibility #65079

Job	Run time
detect changed files	8s
Changelogger use	16s
Changelogger validity	38s
Copied files are in sync	7s
Project structure	2m 7s
PHP lint (7.2)	29s
ESLint (non-excluded files only)	2m 32s
PHP Code Sniffer (non-excluded files only)	0s
PHP Compatibility	0s
PHP lint (7.4)	33s
PHP lint (8.0)	30s
PHP Code Sniffer (changes to excluded files only)	0s
Check linter exclude lists	1m 47s
PHP lint (8.1)	36s
PHP lint (8.2)	33s
PHP lint (8.3)	36s
ESLint (changes to excluded files only)	0s
Lint GitHub Actions yaml files	0s
Lock files are up to date	1m 46s
Monorepo package version refs	1m 12s
	13m 50s

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