Bug Report: Log display preferences do not persist

Describe the bug

Log display switches (graph, decorate, color) don't persist between sessions despite remember_settings = true, causing :NeogitLogCurrent to ignore user preferences.

To Reproduce

1. Open :Neogit log popup
2. Enable graph, decorate, color switches
3. Run any log action to see a beautiful graph
4. Later run :NeogitLogCurrent. plain log without preferences

Expected behavior

All log commands should respect last-used display preferences, consistent with other persisted switches like reverse.

Additional Context

Display switches are marked internal = true which prevents persistence:

:switch("g", "graph", "Show graph", { enabled = true, internal = true })  -- ❌ Not persisted
:switch("r", "reverse", "Reverse order")  -- ✅ Persisted  

I propose to remove internal = true
or to add persisted = true to override

:switch("g", "graph", "Show graph", {
  enabled = true,
  -- internal = true,  -- remove
})

Environment

• OS: Linux/macOS/Windows
• Neovim version: 0.10+
• Neogit version: latest

Locate the popup switch definitions for graph, decorate, color, and reverse, then inspect how remember_settings handles internal switches. Reproduce the difference between :Neogit log and :NeogitLogCurrent, and verify that all log commands retain the last-used display preferences.