Hyundai: Synchronize flag names

[sunnyhaibin]

Description

• Refactor flag names in Hyundai safety to make them more descriptive and consistent.
• Variable names starting with HYUNDAI_PARAM_ have been updated to start with FLAG_HYUNDAI_.
• The functionality remains unchanged; only the naming has been updated for improved clarity and readability.
• This change helps maintain a standardized naming convention across the Python and C++ codebase, making future development and debugging easier.
• No logic or functional behavior of the code is altered in this PR.

panda/python/__init__.py

Lines 197 to 204 in bedee40

	FLAG_HYUNDAI_EV_GAS = 1
	FLAG_HYUNDAI_HYBRID_GAS = 2
	FLAG_HYUNDAI_LONG = 4
	FLAG_HYUNDAI_CAMERA_SCC = 8
	FLAG_HYUNDAI_CANFD_HDA2 = 16
	FLAG_HYUNDAI_CANFD_ALT_BUTTONS = 32
	FLAG_HYUNDAI_ALT_LIMITS = 64
	FLAG_HYUNDAI_CANFD_HDA2_ALT_STEERING = 128

[sshane]

We've moved the car safety code into opendbc, please rebase and re-open your PR there!