Fix suite catch-all shard missing test products in per-module split downloads

Fixed the suite-granularity catch-all shard failing with “Missing test product” errors when projects use per-shard split downloads (#11314). The last (catch-all) shard of a suite-sharded test run now receives every test product it needs instead of only the shared artifact, including modules with no historical suites that were never recorded in the plan. As a result, xcodebuild test-without-building can load the full .xctestrun on the catch-all shard and projects on suite sharding no longer see their suite catch-all runs fail or need to fall back to --shard-archive-path to work around the issue.