Add unit test for findParamWithAuthentication method in Condition class

[theref]

Overview

The findParamWithAuthentication method in the Condition class has a TODO comment indicating it needs to be fixed and tested. Currently, there are no tests for this method.

Context

Located in packages/taco/src/conditions/condition.ts:42-49:

// TODO: Fix this method and add a test for it
public findParamWithAuthentication(): string | null {
  const serialized = toJSON(this.value);
  for (const param of USER_ADDRESS_PARAMS) {
    if (serialized.includes(param)) {
      return param;
    }
  }
  return null;
}

Tasks

1. Understand what the method is supposed to do (find user address parameters in conditions)
2. Write comprehensive unit tests covering:
   • Finding various USER_ADDRESS_PARAMS in conditions
   • Returning null when no params are found
   • Edge cases with nested conditions
3. Fix any issues discovered during testing
4. Remove the TODO comment once complete

Files to Change

• Create new test cases in packages/taco/test/conditions/base/condition.test.ts or appropriate test file
• Update packages/taco/src/conditions/condition.ts if fixes are needed

Test Cases to Include

• Test with conditions containing :userAddress
• Test with conditions containing :userAddressExternalWallet
• Test with conditions containing no user address params
• Test with nested/compound conditions
• Test with multiple user address params (should return the first one found)

Definition of Done

• Comprehensive test suite for findParamWithAuthentication
• All tests passing
• TODO comment removed
• Method behavior documented if any fixes were needed

[theref]

@gitaalekhyapaul