`inlineChat.border` color not respected in terminal's inline chat

[EmrecanKaracayir]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.109
• OS Version: macOS Tahoe

Steps to Reproduce:

1. Add theme color customization to inlineChat.border in settings or via using a theme that defines it,
2. Observe it is not respected in terminal inline chat and instead given a static value.