Make pinned_block_runtime_lock return an error on obsolete subscription

[tomaka]

Fix #2190

See #2190 for all the context.

[mergify]

Automatically approving tomaka's pull requests. This auto-approval will be removed once more maintainers are active.

[github-actions]

twiggy diff report

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

---

 Delta Bytes │ Item
─────────────┼────────────────────────────────────────────────────────────────────────────────────────────────────────
      +13391 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::ha246819a360aad48
      -13366 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::hbba9713cc346fd5c
       +5209 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h28748fbd1571f60b
       -5128 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h5d4633264ce9b364
       +5041 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h9e3b8c6b09372ec2
       +5009 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::hbafbc85a0a36d0a3
       +4917 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::hbb82fe6effad5d10
       +4890 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h254731551a1e0773
       -4876 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h660d710be51a0eb4
       -4846 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h35be08068cc6faaa
       -4752 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::he33e81f99cf99aa0
       -4725 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::hee65404a711b90b1
       +4069 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h7f8676a90d5a23d1
       -4004 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::hd0c0d4537aa61675
       +3501 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::hcc93a7a4786060b4
       -3261 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h6eab578f38036569
       +1288 ┊ <smoldot_light_base::runtime_service::RuntimeCallError as core::clone::Clone>::clone::h761a0446079fa358
       -1288 ┊ <smoldot_light_base::runtime_service::RuntimeCallError as core::clone::Clone>::clone::hb26612c838a9c48b
        +954 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h0b0075cf56adae20
        -766 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h965f6b248a294c22
        +358 ┊ ... and 233 more.
       +1467 ┊ Σ [253 Total Rows]