Optimize context field access in internal receivers (msg_sender_addr, msg_value, etc.) #3328

Currently, context fields like msg_sender_addr, msg_value, msg_bounceable, and cs are compiled into accesses to global variables, involving unnecessary unpacking operations and increased gas usage—even in internal receivers, where these values are already present locally.

Optimization Task:

• For internal receivers, eliminate global variable fetching for context fields (msg_sender_addr, msg_value, msg_bounceable, cs).
• Directly reuse existing local receiver context variables, removing redundant unpacking steps.

Impact:
This optimization reduces gas usage per internal message significantly by removing unnecessary global access and unpacking operations, thus improving the performance and efficiency of internal receivers.