Keep player input in context when game time is frozen

[RANGROO]

Problem

When Skyrim's timescale is set to 0, gamets stops advancing while NPC prechat and chat rows retain their synthetic +1/+2 values. buildHistoricContext() therefore keeps ranking NPC rows above newer player input until the bounded history window excludes the player entirely.

Discord source: Open Discord thread

Change

• Select historic-context rows by descending eventlog rowid, which represents server insertion order.
• Keep the existing reverse step so the final prompt remains chronological.

Validation

• php -l lib/data_functions.php: passed.
• git diff --check: passed.
• Rollback-only PostgreSQL probe: the old ordering selected four older NPC rows; rowid DESC selected the latest player input first.
• Existing HistoricContextTest.php: blocked by a pre-existing sql::escapeLiteral() error; the same failure reproduces unchanged on current origin/unstable.
• Deployed the exact feature file to the local HerikaServer runtime; SHA-256 matched and the UI returned HTTP 200 on the configured Apache port.

Coordination and limits

• PR Dialogue scope v2: fix multi-NPC conversations broken by the cross-NPC bleed filter (#558 follow-up) #568 also edits buildHistoricContext() for listener filtering, but does not change history ordering or cover frozen timescale behavior.
• DialecticServer retains an analogous query, but this report and evidence are CHIM-specific, so no cross-product change is included.
• Not tested in Skyrim.