message: feat(icon): add mts to testts icon
  ESM Typescript test files use the .mts extension
diff: @@ -4369,7 +4369,7 @@ export const extensions: IFileCollection = {
  icon: 'testts',
  extensions: [],
  filenamesGlob: ['test', 'spec', 'e2e-test', 'e2e-spec'],
  - extensionsGlob: ['ts', 'tsx'],
  + extensionsGlob: ['ts', 'tsx', 'mts'],
  format: FileFormat.svg,
  },
  {
  