CodeQL failing on various templates

[teolemon]

What

CodeQL scanned 30 out of 30 JavaScript files and 1 out of 1 TypeScript files in this invocation. Check the status page for overall coverage information: https://github.com/openfoodfacts/openfoodfacts-server/security/code-scanning/tools/CodeQL/status/
Analysis produced the following diagnostic information:
Could not process some files due to syntax errors (6 results)
    * templates/web/pages/import_file_upload/import_file_upload.tt.js#L1C2:2: A parse error occurred: `Expecting Unicode escape sequence \uXXXX`. Check the syntax of the file. If the file is invalid, correct the error or [exclude](https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/customizing-code-scanning) the file from analysis.
    * templates/web/pages/import_file_select_format/import_file_select_format.tt.js#L3C31:31: A parse error occurred: `Unexpected token`. Check the syntax of the file. If the file is invalid, correct the error or [exclude](https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/customizing-code-scanning) the file from analysis.
    * templates/web/pages/import_file_process/import_file_process.tt.js#L14C4:4: A parse error occurred: `Expecting Unicode escape sequence \uXXXX`. Check the syntax of the file. If the file is invalid, correct the error or [exclude](https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/customizing-code-scanning) the file from analysis.
    * templates/web/pages/import_product_categories_process/import_product_categories_from_public_database_process.tt.js#L6C4:4: A parse error occurred: `Expecting Unicode escape sequence \uXXXX`. Check the syntax of the file. If the file is invalid, correct the error or [exclude](https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/customizing-code-scanning) the file from analysis.
    * templates/web/pages/import_photos_upload/import_photos_upload.tt.js#L3C20:20: A parse error occurred: `Expecting Unicode escape sequence \uXXXX`. Check the syntax of the file. If the file is invalid, correct the error or [exclude](https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/customizing-code-scanning) the file from analysis.
    * templates/web/pages/user_form/user_form.tt.js#L2C2:2: A parse error occurred: `Expecting Unicode escape sequence \uXXXX`. Check the syntax of the file. If the file is invalid, correct the error or [exclude](https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/customizing-code-scanning) the file from analysis.