Add RainbowCalibur to EIP-7702 delegator whitelist

Add Rainbow Wallet's EIP-7702 delegator contract (Calibur) to the
on-device whitelist, enabling Ledger users to delegate their EOA to
the RainbowCalibur implementation with a recognizable name shown on
the device display.

The contract is deployed at the same deterministic address across all
supported chains, so a single chain_id = 0 (CHAIN_ID_ALL) entry covers
them all. The address was verified byte-by-byte against the upstream
deployment:

  0x612373D7003d694220f7800EeaF8E3924c0951D3

Source and audits:
  https://github.com/Uniswap/calibur
  https://github.com/Uniswap/calibur/tree/main/audits

Author: DanielSinclair

src/features/sign_authorization_eip7702/whitelist_7702.c

@@ -31,6 +31,10 @@ static const eip7702_whitelist_t EIP7702_WHITELIST[] = {
      .name = "Calibur",
      .address = {0x00, 0x00, 0x00, 0x00, 0x9B, 0x1D, 0x0a, 0xF2, 0x0D, 0x8C,
                  0x6d, 0x0A, 0x44, 0xe1, 0x62, 0xd1, 0x1F, 0x9b, 0x8f, 0x00}},
+    {.chain_id = 0,
+     .name = "RainbowCalibur",
+     .address = {0x61, 0x23, 0x73, 0xD7, 0x00, 0x3d, 0x69, 0x42, 0x20, 0xf7,
+                 0x80, 0x0E, 0xea, 0xF8, 0xE3, 0x92, 0x4c, 0x09, 0x51, 0xD3}},
 };
 
 const char *get_delegate_name(const uint64_t *chain_id, const uint8_t *address) {