feat(worker-rejoin-resync): task 5 - exclude reconciling host from dispatch

Extend the IS_WORKER_UNAVAIL-style candidate-host filter to also skip
a host with XCE_WORKER_RECONCILING set (Req 5.1), naturally
re-including it once the bit clears with no separate mechanism (Req
5.2). Leaves the scheduler's decision-publish code and its
symbol-guard regression test untouched.

Fixes bug-1751: design.md's cited filter site (scheduler.c's
sched_reset_worker_(), via sched_begin_session()) is dead code on both
live drivers - driver.c/sim_loop.c actually call
xce_core_begin_session() -> core_session.c's core_reset_workers(), an
independently-maintained mirror not listed in design.md's File
Structure Plan. Applied the identical disjunct to both sites so the
task's own observable-completion criterion holds in production, not
just on the literally-cited dead path.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Y4M5MJM2zK6nU43da267Ku
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Rongsong Shen 2026-09-01 18:38:07 +00:00
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commit 80d5a06212
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