Accounts, Contacts and Sidebar specs: follow the current table layout, run them

The three suites were skipped since the table rework. What changed under them:

- An account or contact spans three rows (main, total balance, details),
  marked from isFirst; the helpers paired rows by two and filtered on a
  row class the rows no longer carry. A collapsed details row is hidden,
  so rows are read including hidden ones.
- Accounts render one table per account group; the page object reads the
  rows of every group table in order, and the sorting fixture keeps its
  three accounts in one group, since sorting applies within a group.
- The expand toggle is the row's expand column, not a row-toggle element.
- useAccountInfo reads ownership from the keyring context, which the test
  page did not provide, so saving a name did nothing; the page now renders
  the real KeyringCtxRoot. The mock api gains consts.system.ss58Prefix.
- Badge popups (react-tooltip v6) render only while hovered; the specs
  hover the badge first. The multisig badge needs the isMultisig flag.
- Addresses are shown in full and shortened by css; the fixtures with
  shortened addresses are gone.
- The total balance, transferable and locked cards are always shown, as
  placeholders without accounts; the specs check that instead of their
  absence.
- Checks that needed matchers the runner lacks (not.toHaveLength,
  toHaveProperty, toThrow with a contained message) are written against
  the DOM directly.

packages/page-addresses/src/Contacts/index.spec.ts

@@ -19,9 +19,7 @@ await mockAddressesPageHooks();
 
 const { AddressesPage } = await import('../../test/pages/addressesPage.js');
 
-// FIXME isSplit Table
-// eslint-disable-next-line jest/no-disabled-tests
-describe.skip('Addresses page', () => {
+describe('Addresses page', () => {
   let addressesPage: InstanceType<typeof AddressesPage>;
 
   beforeAll(async () => {
@@ -133,7 +131,7 @@ describe.skip('Addresses page', () => {
 
       assertHasClass(row.detailsRow, 'isCollapsed');
 
-      await row.expand();
+      row.expand();
 
       assertHasClass(row.detailsRow, 'isExpanded');
     });

packages/page-addresses/test/pages/addressesPage.tsx

@@ -16,8 +16,7 @@ const NOOP_CHANGE = () => undefined;
 export class AddressesPage extends Page {
   constructor () {
     super(
-      <AddressOverview onStatusChange={NOOP_CHANGE} />,
-      'Address-'
+      <AddressOverview onStatusChange={NOOP_CHANGE} />
     );
   }