Adjust naming of allHead notifications

[skunert]

When a client was subscribing to chain_subscribeAllHeads, notifications received included chain_newHead in the method field.
After this PR the notification method will say chain_allHead like in substrate.

[tomaka]

Thanks!

I've taken the liberty to push a commit with a CHANGELOG entry.

[github-actions]

twiggy diff report

Difference in .wasm size before and after this pull request.

---

 Delta Bytes │ Item
─────────────┼───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
       -6081 ┊ futures_util::abortable::Abortable<T>::try_poll::h877c3b09f3fdc96f
       +6081 ┊ futures_util::abortable::Abortable<T>::try_poll::h96e97dadbcd88406
       +2293 ┊ smoldot::json_rpc::methods::ServerToClient::params_to_json_object::h3231c257c2e4602a
       -2102 ┊ smoldot::json_rpc::methods::ServerToClient::params_to_json_object::h8be81ea8feb254b4
       -1848 ┊ futures_util::abortable::Abortable<T>::try_poll::h581e9258ae7fb524
       +1848 ┊ futures_util::abortable::Abortable<T>::try_poll::hdd070876890841b7
        -857 ┊ futures_util::abortable::Abortable<T>::try_poll::h968e38209b218347
        +857 ┊ futures_util::abortable::Abortable<T>::try_poll::h99afee80048ea96b
        -857 ┊ futures_util::abortable::Abortable<T>::try_poll::hb15be826847eaa0d
        +857 ┊ futures_util::abortable::Abortable<T>::try_poll::hf9f91d1eb83b83ae
        -712 ┊ core::ptr::drop_in_place<smoldot_light::json_rpc_service::chain_head::<impl smoldot_light::json_rpc_service::Background<smoldot_light_wasm::platform::Platform>>::chain_head_follow::{{closure}}::{{closure}}>::h13a42c003649a095
        +712 ┊ core::ptr::drop_in_place<smoldot_light::json_rpc_service::chain_head::<impl smoldot_light::json_rpc_service::Background<smoldot_light_wasm::platform::Platform>>::chain_head_follow::{{closure}}::{{closure}}>::he044ef626ba8953b
        +674 ┊ core::ptr::drop_in_place<smoldot::json_rpc::methods::ServerToClient>::h585eaf929489bc7c
        -646 ┊ core::ptr::drop_in_place<smoldot::json_rpc::methods::ServerToClient>::h4874792e4ae96ff2
        -499 ┊ futures_util::abortable::Abortable<T>::try_poll::h362d7a5ccc17af72
        +499 ┊ futures_util::abortable::Abortable<T>::try_poll::hc63d1ffe0337f9b2
        -331 ┊ core::ptr::drop_in_place<smoldot_light::json_rpc_service::state_chain::<impl smoldot_light::json_rpc_service::Background<smoldot_light_wasm::platform::Platform>>::chain_subscribe_all_heads::{{closure}}::{{closure}}>::h5df58d56ba6d5b38
        +331 ┊ core::ptr::drop_in_place<smoldot_light::json_rpc_service::state_chain::<impl smoldot_light::json_rpc_service::Background<smoldot_light_wasm::platform::Platform>>::chain_subscribe_all_heads::{{closure}}::{{closure}}>::hd0c5bc96e986c5d7
        +325 ┊ core::ptr::drop_in_place<smoldot_light::json_rpc_service::chain_head::<impl smoldot_light::json_rpc_service::Background<smoldot_light_wasm::platform::Platform>>::chain_head_follow::{{closure}}>::hd3d9f8d9d3388bc3
        -325 ┊ core::ptr::drop_in_place<smoldot_light::json_rpc_service::chain_head::<impl smoldot_light::json_rpc_service::Background<smoldot_light_wasm::platform::Platform>>::chain_head_follow::{{closure}}>::hd6cd2f9c88cca114
         +16 ┊ ... and 70 more.
        +235 ┊ Σ [90 Total Rows]