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

Changes:
- src/features/sign_authorization_eip7702/whitelist_7702.c: add a single
  CHAIN_ID_ALL entry for "RainbowCalibur" with the verified 20-byte
  address array.
- tests/ragger/test_eip7702.py: add test_eip7702_rainbow_calibur_in_whitelist,
  which exercises the happy-path sign flow with the RainbowCalibur address
  on chain_id 1, verifying the whitelist match and that the signed
  authorization recovers to the device address.

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) {

tests/ragger/test_eip7702.py

@@ -159,3 +159,13 @@ def test_eip7702_calibur_in_whitelist(scenario_navigator: NavigateWithScenario,
            bytes.fromhex("000000009B1D0aF20D8C6d0A44e162d11F9b8f00"),
            NONCE,
            CHAIN_ID_1)
+
+
+def test_eip7702_rainbow_calibur_in_whitelist(scenario_navigator: NavigateWithScenario, test_name: str):
+    device = scenario_navigator.backend.device
+    settings_toggle(device, scenario_navigator.navigator, [SettingID.EIP7702])
+    common(scenario_navigator,
+           test_name,
+           bytes.fromhex("612373D7003d694220f7800EeaF8E3924c0951D3"),
+           NONCE,
+           CHAIN_ID_1)