[DCV-3760] Refresh profiles.yml resolution on config reparse

[jesusmgg]

Summary

• Track all potential profiles.yml paths (env var, project dir, ~/.dbt) in the watcher instead of only the resolved one at startup
• Re-resolve profiles_dir dynamically on reparse so the server switches when a higher-priority profiles.yml appears or the active one is deleted
• Re-resolve standard profiles_dir paths from state file on startup instead of using stale saved values. Custom (non-standard) paths are preserved.

Test plan

• Modify ~/.dbt/profiles.yml, server reparses within 2s
• Copy profiles.yml to project dir, server switches to it
• Delete project dir profiles.yml, server falls back to ~/.dbt
• Custom profiles_dir (non-standard path) preserved across reparse
• Server recovers after fixing a broken profiles.yml

After merge

git tag v1.1.7 && git push origin v1.1.7