symfony

bug #41170 [DependencyInjection] Don't try to load YamlFileLoader if it's not actually needed (nicolas-grekas)

This PR was merged into the 5.3-dev branch.

Discussion
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[DependencyInjection] Don't try to load YamlFileLoader if it's not actually needed

| Q             | A
| ------------- | ---
| Branch?       | 5.x
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | Fix #41169
| License       | MIT
| Doc PR        | -

This PR enables using DI without Config when autoconfiguration is not used.
(When autoconfiguration is used, the dependency on Config is still there.)

Commits
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7eb46bd7 [DI] Don't try to load YamlFileLoader if it's not actually needed