fix(statics): correct Avalanche C-Chain entries in LEGACY_CHAIN_ID_MAP

Chain IDs 43114 and 43113 were mapped to 'avax' and 'tavax'
respectively, but the registered coin names are 'avaxc' and
'tavaxc'. Any call to CoinMap.fromChainId() for these chain IDs
would throw CoinNotDefinedError.

Adds a unit test asserting that coinNameFromChainId(43114) returns
'avaxc' and coinNameFromChainId(43113) returns 'tavaxc', and that
coins.get() succeeds for both.

Ticket: CGD-726
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Session-Id: 6ec5a14f-c3aa-46ed-8177-39e4fc4263cd
Task-Id: 1d9f9835-f70a-4605-9a03-d95971816e49

Author: sachinBitgo

modules/statics/src/map.ts

@@ -113,8 +113,8 @@ export class CoinMap {
     11142220: 'tcelo',
     2222: 'kava',
     2221: 'tkava',
-    43114: 'avax',
-    43113: 'tavax',
+    43114: 'avaxc',
+    43113: 'tavaxc',
     100: 'gno',
     130: 'unieth',
     1301: 'tunieth',

modules/statics/test/unit/coins.ts

@@ -857,6 +857,19 @@ describe('CoinMap', function () {
       should(ethCoinName).not.be.undefined();
       ethCoinName!.should.equal('eth');
     });
+
+    it('should map Avalanche C-Chain chain IDs to registered coin names', () => {
+      const avaxcName = coins.coinNameFromChainId(43114);
+      should(avaxcName).not.be.undefined();
+      avaxcName!.should.equal('avaxc');
+      should(() => coins.get(avaxcName!)).not.throw();
+
+      const tavaxcName = coins.coinNameFromChainId(43113);
+      should(tavaxcName).not.be.undefined();
+      tavaxcName!.should.equal('tavaxc');
+      should(() => coins.get(tavaxcName!)).not.throw();
+    });
+
   });
 });