[DASH-635] Fix useActiveWalletChain not returning custom chain (#5752)

## Problem solved

Short description of the bug fixed or feature added

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## PR-Codex overview
This PR adds functionality to handle custom chains by mapping them to a new format and storing them in a separate array.

### Detailed summary
- Added a line to push mapped custom chains to the `allChainsV5` array using `mapV4ChainToV5Chain(c)`.
- Included an ESLint directive to disable the `no-restricted-syntax` rule for the new line.

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Author: MananTank

apps/dashboard/src/hooks/chains/allChains.ts

@@ -86,6 +86,8 @@ function createAllChainsStore() {
     for (const c of chainOverrides) {
       if (c.isCustom) {
         allChains.push(c);
+        // eslint-disable-next-line no-restricted-syntax
+        allChainsV5.push(mapV4ChainToV5Chain(c));
         idToChain.set(c.chainId, c);
         nameToChain.set(c.name, c);
         slugToChain.set(c.slug, c);