REGTESTS: filters: Exercise TCP Lua payload chains and sequencing

REGTESTS: filters: Exercise TCP Lua payload chains and sequencing

Use same-length, non-commuting Lua substitutions to observe the actual
TCP request and response evaluation order without depending on packet
boundaries. Mix the rewrites with trace and active bandwidth filters.

Inherit independent channel sequences from named defaults, reverse them
locally by first detaching the inherited child to the class anchor, and
check class-wide disabling followed by id-specific enabling. Include a
fully disabled Lua chain and a legacy chain retaining symmetric order.

Use HTTP framing only to check complete bodies over TCP; the proxies do
not parse HTTP and the Lua filters are not HTX-capable.