Fix trailing global flags in search recipe mode

[Widthdom]

Summary

• keep recognized global flags parseable before or after search --recipe, recipe child selectors, --named-query, and explicit --query modes
• preserve option-like ad hoc query literals, including --no-progress
• avoid letting a missing top-level value option consume an explicit search selector

Validation

• dotnet build CodeIndex.sln -c Release --no-restore -p:UseSharedCompilation=false -m:1 -nodeReuse:false
• Release parser regressions on .NET 8 and .NET 9, including Issue Trailing --no-progress is treated as a positional query for search --recipe #5210, property-based parser coverage, and global flag consumers
• exact Issue Trailing --no-progress is treated as a positional query for search --recipe #5210 CLI reproduction plus leading/trailing --no-progress smoke checks
• dotnet format CodeIndex.sln --verify-no-changes --no-restore
• dotnet run --project tools/CodeIndex.Changelog -- check
• two Codex adversarial review rounds; the first P2 finding was fixed and the final review found no actionable defects

Documentation

• added bilingual changelog fragment changelog.d/unreleased/5210.fixed.md
• no guide change is needed because this restores the existing documented global --no-progress contract without adding a new interface

Follow-ups

• None.

Fixes #5210