Chat: Inline context doesn't work inside parens

[hawkticehurst]

There's currently an issue where inline chat context will not work when wrapped in parens. It seems like there must always be a whitespace directly following inline context for it to work.

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

Steps to Reproduce:

1. Create a pair of parens
2. Add a # inside the parens and start typing to add a file as context (ensure there are no spaces between text and parens)
3. See that it doesn't work

Screen.Recording.2025-06-10.at.9.23.18.AM.mov

Version: 1.101.0-insider
Commit: 8a0f412
Date: 2025-06-10T00:22:34.804Z
Electron: 35.5.1
ElectronBuildId: 11708675
Chromium: 134.0.6998.205
Node.js: 22.15.1
V8: 13.4.114.21-electron.0
OS: Darwin arm64 23.6.0