fix: remove pattern for ref property in localization.metadata.schema.json

[guillaumerochelle]

There is no point validating the ref if we don't validate the key.

[nx-cloud]

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• nx run-many --target=test-int --parallel 3
• nx run-many --target=test-e2e --parallel 3
• nx run-many --target=build --projects=eslint-plugin --parallel 3
• nx run-many --target=publish --parallel 3 --nx-bail --userconfig .verdaccio/conf/.npmrc-logged --tag=latest --@o3r:registry=http://127.0.0.1:4873 --@ama-sdk:registry=http://127.0.0.1:4873 --@ama-terasu:registry=http://127.0.0.1:4873 --@o3r-training:registry=http://127.0.0.1:4873
• nx run-many --target=build --parallel 3
• nx affected --target=test --parallel 3 --cacheDirectory=D:\a\otter\otter/.cache/jest --base=remotes/origin/release/11.5 --collectCoverage
• nx run ama-sdk-schematics:build-swagger
• nx affected --target=test --parallel 3 --cacheDirectory=/home/runner/work/otter/otter/.cache/jest --base=remotes/origin/release/11.5 --collectCoverage
• nx affected --target=lint --parallel 3 --base=remotes/origin/release/11.5 --configuration ci
• nx run-many --target=build-swagger --parallel 3

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[amadeus-pmeneguzzi]

I approve this change !

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 0.00%. Comparing base (e1f959b) to head (34ba147).
Report is 2 commits behind head on release/11.5.

✅ All tests successful. No failed tests found.

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