Invalid file pattern provided [object Object]" error when using @workspace tag

[hysaordis]

Type: Bug

We are trying to use the @workspace tag in a prompt on GitHub Copilot, but we receive the following error:
Invalid file pattern provided [object Object]

Steps to Reproduce:

Create a new file or open an existing file in GitHub Copilot.
Insert any prompt containing the @workspace tag.
Run the prompt.
The error "Invalid file pattern provided [object Object]" appears.

Expected Behavior:

The @workspace tag should work correctly without generating the above error.

Extension version: 0.23.2024102903
VS Code version: Code 1.96.2 (fabdb6a30b49f79a7aba0f2ad9df9b399473380f, 2024-12-19T10:22:47.216Z)
OS version: Windows_NT x64 10.0.22631
Modes:

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-8350U CPU @ 1.70GHz (8 x 1896)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	undefined
Memory (System)	15.88GB (4.99GB free)
Process Argv	--crash-reporter-id 5c06272e-2028-4ebf-9373-b6620234cfc2
Screen Reader	no
VM	40%

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