fix(charging-station): cancel a pending reset when the station is deleted (#2027...

fix(charging-station): cancel a pending reset when the station is deleted (#2027) (#2031)

reset() stopped the station, slept resetTime, then re-initialized and
reconnected without checking whether the station had been deleted during
the sleep. A station deleted mid-reset was resurrected and reconnected to
the CSMS (the "zombie" reconnect that triggers #2017).

Add an instance AbortController tripped by delete(); reset() now awaits
interruptibleSleep(resetTime, signal) and rechecks the aborted state
before re-initializing, bailing out cleanly on abort. The dispose signal
is kept distinct from started/stopping, which reset() itself toggles via
stop() and therefore cannot be used to detect deletion.

The OCPP Reset response stays Accepted and the handler still invokes
reset() fire-and-forget; only the reset/delete lifecycle changes.

Part B (element-granular worker-thread termination) remains open.