Hoist protocol_map to module-level constant PROTOCOL_MAP

[Copilot]

protocol_map inside get_protocol_number() was being rebuilt as a 143-entry dict on every call. Moved it to a module-level constant PROTOCOL_MAP so it's allocated once at import time.

Changes

• fmcapi/api_objects/helper_functions.py: Extracted protocol_map from get_protocol_number() into a module-level PROTOCOL_MAP constant; function now references it directly.

# Before: dict rebuilt on every call
def get_protocol_number(protocol_name):
    protocol_map = { "TCP": "6", "UDP": "17", ... }  # ~143 entries
    return protocol_map.get(protocol_name.upper())

# After: allocated once at import time
PROTOCOL_MAP = { "TCP": "6", "UDP": "17", ... }

def get_protocol_number(protocol_name):
    return PROTOCOL_MAP.get(protocol_name.upper())

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