test: improve coverage `PgVectorEmbeddingDimensionsTests`#3907

sobychacko merged 2 commits intospring-projects:mainspring-projects/spring-ai:mainfrom

alxkm:test/PgVectorEmbeddingDimensionsTestsalxkm/spring-ai:test/PgVectorEmbeddingDimensionsTestsCopy head branch name to clipboard