Broken RTS message, out of sync with SC

[skliper]

Checklist (Please check before submitting)

• I reviewed the Contributing Guide.
• I performed a cursory search to see if the bug report is relevant, not redundant, nor in conflict with other tickets.

Describe the bug
Critically broken. Local defn of start RTS command is out of sync with SC:

LC/config/default_lc_msgstruct.h

Lines 231 to 248 in ca47670

	typedef struct
	{
	uint16 RTSId; /**< \brief RTS Id to start */
	} LC_RTSRequest_Payload_t;
	/**
	* \brief Send Command to Start a Stored Command RTS
	*
	* This is a local declaration of the command message structure
	* to initiate an RTS and has been placed here to allow the
	* the LC application to be built without including headers from
	* any other applications (like Stored Commanding).
	* A mission may choose to remove this and use a message
	* structure declared elsewhere instead.
	*
	* This also applies to the LC_RTS_REQ_MID and LC_RTS_REQ_CC
	* constants (see lc_mission_cfg.h).
	*/

https://github.com/nasa/SC/blob/ab3a9a03aee8fb9826077c0492f4b7698132c057/config/default_sc_msgdefs.h#L251-L258

Really the concept of local defines for SC elements doesn't seem like a good idea. LC depends on SC, the message structure, CC, and MID should come from SC.

To Reproduce
Trigger an RTS from LC. Event received:
66/1/SC 2: Invalid msg length: ID = 0x000018A9, CC = 4, Len = 10, Expected = 12

Expected behavior
Command should work

Code snips
See above

System observed on:
On an Ubuntu 22 docker, issue is in main branches.

Additional context
Might be missing a functional test or need an update if this is currently passing.

Reporter Info
Jacob Hageman - NASA/GSFC

[skliper]

Note, padding has existed in SC since 3.1.0-rc1 (May 2022): https://github.com/nasa/SC/blob/ae2d615e7431d430950fd25ccc7e85587c03ad95/fsw/src/sc_msg.h#L158-L164

It was not in 2.5.0:
https://github.com/nasa/SC/blob/83490def6f8882fbdc2df6592bc319fd96ac2a8b/fsw/src/sc_msg.h#L184-L192