[NONEVM-3269] Define explicitly dummy addresses for TON and Link

[patricios-space]

NONEVM-3269 Define explicitly dummy addresses for wrapped TON and LinkToken Jetton contracts

[Copilot]

Pull request overview

This PR introduces centralized dummy address definitions for TON and LINK tokens in the Go codebase, replacing hardcoded addresses scattered across test and deployment files.

Key Changes:

• Added LinkTokenAddr and updated TonTokenAddr comment in pkg/ton/tvm/address.go to clearly document these as dummy addresses
• Introduced TokenPrice utility function to calculate token prices with proper decimal handling
• Refactored test and deployment code to use centralized address constants

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
pkg/ton/tvm/address.go	Defines dummy addresses for TON and LINK tokens as package-level constants
integration-tests/model/fee_quoter_test.go	Replaces hardcoded address literals with centralized dummy address constants
integration-tests/deployment/ccip/token_price_test.go	Adds comprehensive test coverage for the new TokenPrice utility function
deployment/ccip/cs_test_helpers.go	Refactors token price calculation to use new TokenPrice utility function
deployment/ccip/cs_deploy_ton_chain.go	Updates LINK token address initialization to use centralized dummy address constant
deployment/ccip/config/tokenPrice.go	Implements new utility function for calculating token prices based on USD price and token decimals

Comments suppressed due to low confidence (1)

deployment/ccip/cs_deploy_ton_chain.go:3

• The import order has been changed with 'mcms' now appearing before 'chainlink-deployments-framework' imports. Go convention typically groups imports in order: standard library, third-party packages, then local packages. Consider maintaining consistent import ordering throughout the codebase.

import (

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