[BUG] --hidden is not overridden by --show-hidden or -A

[equationzhao]

Describe the bug
The help text says --show-only-hidden, --hidden is overridden by --show-hidden/-a/-A, but combining these flags still keeps the HiddenOnly filter active.

As a result, --hidden --show-hidden or --hidden -A only prints hidden files instead of showing all matching entries.

To Reproduce

1. Create a directory with one visible file and one hidden file:

   tmp=$(mktemp -d)
   touch "$tmp/visible" "$tmp/.hidden"

2. Run:

   ./g -A --hidden --show-hidden --no-icon --color never "$tmp"

3. Only .hidden is shown. visible is missing.

Screenshots
Not applicable.

Info (please complete the following information):

• OS: macOS (darwin/arm64)
• Version: v0.31.2

Additional context
--hidden appends filter.HiddenOnly, while -a and -A only delete filter.RemoveHidden. They do not remove HiddenOnly, so the documented override does not happen.