fix: Correct bag threshold display with CurrencyToVote conversion

[rajk93]

fixes #11445

Problem

The Bags-List page displayed incorrect min/max threshold values on chains where total issuance exceeds u64::MAX.

Solution

Implemented CurrencyToVote conversion to correctly display bag thresholds:

1. Created useCurrencyToVote hook - Calculates the conversion factor based on total issuance:

   • If totalIssuance ≤ u64::MAX: factor = 1 (no conversion)
   • If totalIssuance > u64::MAX: factor = totalIssuance / u64::MAX

2. Updated useBagsList - Applies conversion to bag thresholds before display:

   • Converts vote scores to currency amounts using toCurrency(voteScore)
   • Special handling for Westend Asset Hub which uses SaturatingCurrencyToVote (Ref PR #8307)

Preview

1. Before Fix

2. After fix

[polkadot-js-bot]

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