fix(issue-list): escape sort value in buildMultiTargetContextKey for consistency

buildPaginationContextKey escapes all param values via escapeContextKeyValue,
but buildMultiTargetContextKey only escaped period and query, leaving sort
unescaped. Fix the inconsistency by escaping sort too.

Current sort values (date/duration) don't contain pipes so there's no active
bug, but consistent escaping prevents future issues if sort values change.

Author: BYK

src/commands/issue/list.ts

@@ -670,9 +670,10 @@ function buildMultiTargetContextKey(
     ? escapeContextKeyValue(flags.query)
     : undefined;
   const escapedPeriod = escapeContextKeyValue(flags.period ?? "90d");
+  const escapedSort = escapeContextKeyValue(flags.sort);
   return (
     `host:${host}|type:multi:${targetFingerprint}` +
-    `|sort:${flags.sort}|period:${escapedPeriod}` +
+    `|sort:${escapedSort}|period:${escapedPeriod}` +
     (escapedQuery ? `|q:${escapedQuery}` : "")
   );
 }