New(GetPoolDistr|GetStakeDistribution)2 returning ledger types (#1540)

Closes #1529

Author: jasagredo

ouroboros-consensus-cardano/changelog.d/20250603_143238_javier.sagredo_delete_deprecate_query.md

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+### Patch
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+### Non-Breaking
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+### Breaking
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+- Deprecate `GetPoolDistr` in favor of `GetPoolDistr2` (new in `NodeToClientV_21`).
+- Deprecate `GetStakeDistribution` in favor of `GetStakeDistribution2` (new in `NodeToClientV_21`).