Fix aegis and Wraith King reincarnation deaths counting as deaths

[geracosta]

Fixes odota/core#726.

While checking parsed data against the Steam API scoreboard over 100 recent parsed pro matches, I found 24/1000 players whose combat-log death counts (killed_by sums) disagree with the scoreboard. The breakdown:

• Every aegis death in the sample leaked into kills_log/killed/killed_by (14 players, all +1, all aegis carriers — verified case by case against the CHAT_MESSAGE_AEGIS pickups). The existing filter doesn't catch them on modern replays: it clears the holder on modifier_aegis_regen, which the combat log no longer emits (I dumped every event around a verified aegis death — the revival leaves no combat log trace at all), and it shares a single aegisDeathTime across holders.
• Wraith King reincarnations count as deaths (found a WK pro match with scoreboard 5 vs parsed 7). The scepter variant of Reincarnation doesn't log the base modifier_skeleton_king_reincarnation either.
• The remaining mismatches are suicides, which the scoreboard counts but the combat-log path has always excluded — out of scope here (Add deaths_log with gold lost and time dead per death #88's deaths_log records those).

The fix resolves reincarnations in a pre-scan keyed by event time, the same pattern as #87/#88, since the chat, modifier, interval and death entries around a reincarnation are not strictly ordered in the stream:

• Aegis: the first death of a holder within the 5-minute expiry window of a CHAT_MESSAGE_AEGIS/AEGIS_STOLEN pickup is the aegis reincarnation, and consumes that pickup — so a later real death counts, and an expired aegis can't swallow anything.
• WK: a death of the Wraith King where the life_state intervals show him back on his feet within 4 seconds and with no buyback event in between is a reincarnation (his revive takes 3s; the shortest real respawn is far longer). The base reincarnation modifier is kept as a fast path for replays that do log it.

Validation on 9 matches (8 with aegis activity + the WK match), all against Steam API scoreboards:

• All 6 leaked aegis deaths fixed, exact scoreboard match, with every other player's counts untouched (77/80 exact — the other 3 are the suicides above, unchanged).
• WK match: parsed deaths 7 → 5, matching the scoreboard, keeping his 5 real deaths (including a pre-horn one) and dropping exactly the two reincarnations.

This also fixes the same inflation inside teamfight deaths, since those are derived from the killed entries.