File watcher is not work perfectly with symlink

[invzhi]

I'm using git-sync and fava with docker-compose to share the ledger with my partner.

git-sync "publishes" each sync through a worktree and a named symlink to ensure an atomic update.

The problem is that when I update and push the ledger for the first time after the fava docker runs, fava can catch changes. But when I update and push the ledger again, fava cannot catch changes.
This means in my situation, fava can only catch changes for the first time.

I checked the code. Maybe the cause is fava only watches the absolute path of files.

fava/src/fava/core/watcher.py

Lines 147 to 148 in e71d724

	files_set = {p.absolute() for p in files if p.exists()}
	folders_set = {p.absolute() for p in folders if p.is_dir()}

BTW, I tried --poll-watcher option. It works.