message: Fix the no infinite loop condition in parseFlsFile
  It is sufficient to ignore files that are already watched,
  similarly as in parseInputFiles.
diff: @@ -708,8 +708,8 @@ export class Manager {
  !fs.existsSync(inputFile)) {
  continue
  }
  - // Drop the current rootFile often listed as INPUT and drop any file that is already in the texFileTree
  - if (texFile === inputFile || (texFile in this.cachedContent && inputFile in this.getIncludedTeX(texFile))) {
  + if (inputFile === texFile && this.filesWatched.has(inputFile)) {
  + /* Drop the current rootFile often listed as INPUT and any file that is already watched */
  continue
  }
  if (path.extname(inputFile) === '.tex') {
  