TypeScript's const modifier on type parameteres breaks syntax highlighting in .tsx files

[gustavopch]

Type: Bug

• Create a file repro.ts.
• Paste the code below.
• See that the syntax highlighting works fine.
• Change the extension to .tsx.
• See that the syntax highlighting is broken.

export const always = <const T,>(value: T) => {
  return () => value
}

repro.ts:

repro.tsx:

Context: https://devblogs.microsoft.com/typescript/announcing-typescript-5-0/#const-type-parameters

VS Code version: Code - Insiders 1.78.0-insider (Universal) (e410e7c66e7ce5c6bc31f73150d66857804a0ee9, 2023-04-28T12:31:32.032Z)
OS version: Darwin arm64 22.3.0
Modes:
Sandboxed: Yes

System Info

Item	Value
CPUs	Apple M1 (8 x 24)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: disabled_off direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled metal: disabled_off multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled
Load (avg)	3, 3, 3
Memory (System)	8.00GB (0.13GB free)
Process Argv
Screen Reader	no
VM	0%

Extensions: none

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