Update `ConfigurationPropertySourcesPropertyResolver` so that calls to
the `DefaultResolver` do not attempt conversion.
Prior to this commit, the delegate resolver was accidentally called
with the target type which could cause a `ConversionFailedException`
to be thrown. We should have always used `Object.class` and let the
`convertValueIfNecessary` method perform conversion.
Fixes gh-26732
f5b93da90f