Fix the lint errors

Most are object keys out of order after the rename (dicle, pezkuwi,
bizinikiwi, teyrchains and zagros sort differently from the names they
replaced); they are sorted, behaviour is unchanged. The rest:

- createClass: header.hash is already the BlockHash type; the
  `as any` cast is removed
- ScProvider: WellKnownChain is a string union in @bizinikiwi/connect,
  so `string | WellKnownChain` was `string`; the spec parameter says so
- ScProvider: the jsonRpcResponses loop is a named async function whose
  rejection (chain removed, client terminated) is caught explicitly
  instead of a floating promise
- the fake chain in the spec no longer needs a non-null assertion
- Extrinsic.hash: redundant non-null assertion removed
- metadata-get.mjs writes the 2026 header

packages/api/src/submittable/createClass.ts

@@ -1,4 +1,4 @@
-// Copyright 2017-2025 @pezkuwi/api authors & contributors
+// Copyright 2017-2026 @pezkuwi/api authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
 /* eslint-disable no-dupe-class-members */
@@ -54,8 +54,7 @@ function makeEraOptions (api: ApiInterfaceRx, registry: Registry, partialOptions
   }
 
   return makeSignOptions(api, partialOptions, {
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    blockHash: header.hash as any,
+    blockHash: header.hash,
     era: registry.createTypeUnsafe<ExtrinsicEra>('ExtrinsicEra', [{
       current: header.number,
       period: partialOptions.era || mortalLength