feat: Simple pool join & call to action UI

[rossbulat]

This PR introduces new UI for accounts that are not yet staking. The Status components of both nominate and pools pages have been refreshed to have larger call to action buttons with better syncing. A new canvas has been introduced for one-click pool joining, that randomly selects active and open pools for users to select.

TODO

• Translations: @TingALin please can you translate. The new keys are already present in the cn locale files.

Breakdown of changes

• Introduces a new canvas that automatically selects an active, open pool. Selectable pools are those that have been active for the last 14 eras. Users can click a "Choose Another Pool" to randomly select another eligible pool to join.
• Improves initial app syncing by introducing default syncing values.
• Introduces a new call to action component that displays large buttons. These are used as CTAs for nominating and pool joining / creation.
• Fixes an issue where there was a race condition when fetching unclaimed pool rewards on account switching.
• Fixes an issue where validator metrics buttons were being displayed in canvases.
• Simplifies useSyncing hook by defaulting to wildcard.
• Adds a Tx form factor for a large full-width submit button, accessed by a new DisplayFor property of card.
• Improved abstraction of SubmitTx components.
• Amends bond input components to only display the first error when there are multiple errors.
• ClaimPermissionInput now requires a claim permission (no undefined value).
• Unclaimed rewards and payout stats are now dimmed if the account is inactive.

[rossbulat]

Initial review completed. translations & additional tests still to do.