Adjust object index typings (#5671)

* Adjust object index typings

* CHANGELOG

* Remove dot-notation overrides

* Align overrides

* Ordering

* Revert lint formatting changes

* Bump common

packages/rpc-core/src/index.spec.ts

@@ -35,7 +35,7 @@ describe('Api', (): void => {
       }
     });
 
-    expect(isFunction((rpc as unknown as Record<string, Record<string, boolean>>).testing.foo)).toBe(true);
+    expect(isFunction((rpc as unknown as { testing: { foo: boolean } }).testing.foo)).toBe(true);
     expect(rpc.sections.includes('testing')).toBe(true);
     expect(rpc.mapping.get('testing_foo')).toEqual({
       description: 'foo',

packages/rpc-core/src/methodSend.spec.ts

@@ -13,7 +13,7 @@ import { RpcCore } from './index.js';
 describe('methodSend', (): void => {
   const registry = new TypeRegistry();
   let rpc: RpcCore;
-  let methods: Record<string, DefinitionRpc>;
+  let methods: { blah: DefinitionRpc; bleh: DefinitionRpc };
   let provider: ProviderInterface;
 
   beforeEach((): void => {