fix: replace testnet:true with status field, fix rpc array format, update faucet URL

- eip155-7605: remove 'testnet:true' (not in schema, additionalProperties:false
  causes JSON schema validation failure). Replace with 'status:incubating'.
- eip155-7605: fix faucet URL from POST API endpoint to browser-accessible
  platform URL (https://platform-testnet.anchorchain.co.za).
- Both files: collapse single-item rpc arrays to one line (prettier format).
- eip155-7206: add 'status:active'.

Author: smitcj

_data/chains/eip155-7206.json

@@ -1,9 +1,7 @@
 {
   "name": "AnchorChain",
   "chain": "ANCH",
-  "rpc": [
-    "https://api.anchorchain.co.za/rpc"
-  ],
+  "rpc": ["https://api.anchorchain.co.za/rpc"],
   "faucets": [],
   "nativeCurrency": {
     "name": "Anchor",
@@ -14,6 +12,7 @@
   "shortName": "anch",
   "chainId": 7206,
   "networkId": 7206,
+  "status": "active",
   "explorers": [
     {
       "name": "AnchorChain Explorer",

_data/chains/eip155-7605.json

@@ -1,12 +1,8 @@
 {
   "name": "AnchorChain Testnet",
   "chain": "ANCH",
-  "rpc": [
-    "https://api-testnet.anchorchain.co.za/rpc"
-  ],
-  "faucets": [
-    "https://api-testnet.anchorchain.co.za/v1/faucet/claim"
-  ],
+  "rpc": ["https://api-testnet.anchorchain.co.za/rpc"],
+  "faucets": ["https://platform-testnet.anchorchain.co.za"],
   "nativeCurrency": {
     "name": "Anchor",
     "symbol": "ANCH",
@@ -16,7 +12,7 @@
   "shortName": "anch-testnet",
   "chainId": 7605,
   "networkId": 7605,
-  "testnet": true,
+  "status": "incubating",
   "explorers": [
     {
       "name": "AnchorChain Testnet Explorer",