refactor(FQDN): further more refator on idl/dsn.layer2.thrift v2

[Samunroyu]

This is a further refactor on idl/dsn.layer2.thrift based on #2049
the main effects are on partition_configuration structure.

[acelyc111]

@Samunroyu pls check the failed tests, thanks!

[Copilot]

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (3)

src/meta/server_state_restore.cpp:258

• The implicit boolean check on 'primary' may be ambiguous if host_port does not clearly define a boolean conversion. Consider explicitly checking whether 'primary' is set or valid (e.g., comparing against a default host_port instance).

if (primary || !secondaries.empty()) {

src/meta/meta_bulk_load_service.cpp:479

• [nitpick] The temporary variable 'primary' used here could be confused with other primary values in the context; consider renaming it to a more descriptive name such as 'extracted_primary' for clarity.

GET_HOST_PORT(request, primary, primary_hp);

src/meta/duplication/meta_duplication_service.cpp:771

• Relying on an implicit boolean check on 'primary' might lead to ambiguity; explicitly verify if 'primary' is valid or set to its default value to ensure correct behavior.

if (!primary) {