Add Windows Terminal to OSC 8 hyperlink auto-detect allowlist

windows terminal has supported OSC 8 hyperlinks since v1.4 (microsoft/terminal#204), but CC's auto-detect doesn't recognize it - so OSC 8 sequences in custom statuslines get stripped unless i set FORCE_HYPERLINK=1.

the docs already mention this as a troubleshooting step (https://code.claude.com/docs/en/statusline#troubleshooting), so the workaround is fine, but it'd be small to just detect WT directly. $env:WT_SESSION is a reliable signal - it's only set by windows terminal, and it's been there for years.

repro:

• WT.exe on win11, no tmux, no SSH
• custom statusline emits \e]8;;file:///C:/Users/sms/.files\e\\.files\e]8;;\e\\
• rendered as plain text, no underline, ctrl+click does nothing
• set $env:FORCE_HYPERLINK = '1' → works as expected

raw OSC 8 echoed directly to the same pane (outside CC) renders fine, so it's CC's pass-through, not the terminal.