Some config keys changed as well since the last update

It's auto generated, so we don't have control over it and
fixing it each time is annoying.

This reverts commit 2535de6a.

While it's not stricly required by everyone it doesn't require any
extra implementation right now and is required by all frontend apps
in the future, so including it should make the initial setup easier.

fix(deps): update dependency symfony/flex to v1.16.3

See merge request !42

fix(deps): update all non-major dependencies to v5.3.8 (patch)

See merge request !43

fix(deps): update all non-major dependencies (patch)

See merge request !40

chore(deps): update all non-major dependencies (minor)

See merge request !41

It gets called during composer install which we need when deploying
without dev packages.

Disabling scripts would work, but then the symfony install commands
would be skipped too...

and remove the backend client id while at it, it is unused

fix(deps): update dependency symfony/flex to v1.14.7

See merge request !39

fix(deps): update all non-major dependencies (patch)

See merge request !38

fix(deps): update dependency symfony/flex to v1.14.0

See merge request !37

chore(deps): update all non-major dependencies (patch)

See merge request !36

chore(deps): lock file maintenance

See merge request !35

chore(deps): update dependency phpstan/phpstan-phpunit to v0.12.22

See merge request !34

chore(deps): update all non-major dependencies (patch)

See merge request !33

chore(deps): update dependency vimeo/psalm to v4.9.2

See merge request dbp/dbp-api/dbp-relay-server-template!31

chore(deps): lock file maintenance

See merge request dbp/dbp-api/dbp-relay-server-template!32