guest_rudp_context_queries released its context with sceRudpEnd(context)
and shut the library down with sceRudpTerminate(), and guest_rudp_pump
shut it down with sceRudpTerminate(), the order main had before the
swap. They now call sceRudpTerminate(context) and sceRudpEnd().
PPSA03490 (Demon Slayer) imports sceRudpGetMaxSegmentSize, sceRudpProcessEvents, sceRudpNetFlush and sceRudpNetReceived, which no library exports. The first three answer by the library's initialised state; sceRudpNetReceived is declared without an implementation because its signature is unknown. Adds one test and TechnicalDebt entries.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>