Refactor FileSystemBackedTableMetadata and related classes to support getBloomFilters directly

The api {{getBloomFilters}} is not supported in FileSystemBackedTableMetadata:
{code:java}
@Override
public Map, ByteBuffer> getBloomFilters(final List> partitionNameFileNameList)
throws HoodieMetadataException {
throw new HoodieMetadataException("Unsupported operation: getBloomFilters!");
}{code}
It's better to support bloom filters without metadata table from FileSystemBackedTableMetadata as well to unify the logic and reduce the special-cased logic for bloom filters between metadata table vs file system backed metadata.

## JIRA info

- Link: https://issues.apache.org/jira/browse/HUDI-3533
- Type: Improvement
- Epic: https://issues.apache.org/jira/browse/HUDI-6243

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## Comments

25/Apr/22 12:36;xushiyan;Similar to HUDI-3532;;;

Start with FileSystemBackedTableMetadata and its getBloomFilters entry point, then trace the related metadata classes that handle bloom filters. Compare the filesystem-backed and metadata-table paths to identify the special-cased logic; done means the filesystem-backed path supports getBloomFilters without throwing an unsupported-operation exception and the logic is unified.

Written by the indexing model from the issue text.